Commit for release 1.6.4
diff --git a/docs/_config.yml b/docs/_config.yml
index 4426fc5..4b1377c 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -27,10 +27,10 @@
 # we change the version for the complete docs when forking of a release branch
 # etc.
 # The full version string as referenced in Maven (e.g. 1.2.1)
-version: "1.6.1"
+version: "1.6.4"
 # For stable releases, leave the bugfix version out (e.g. 1.2). For snapshot
 # release this should be the same as the regular version
-version_title: "1.6"
+version_title: 1.6
 version_javadocs: "1.6"
 version_scaladocs: "1.6"
 # Branch on Github for this version
diff --git a/flink-annotations/pom.xml b/flink-annotations/pom.xml
index f28b32c..2d49b2a 100644
--- a/flink-annotations/pom.xml
+++ b/flink-annotations/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-clients/pom.xml b/flink-clients/pom.xml
index 6405a63..fb6dcfa 100644
--- a/flink-clients/pom.xml
+++ b/flink-clients/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-cassandra/pom.xml b/flink-connectors/flink-connector-cassandra/pom.xml
index d112623..054e0c11 100644
--- a/flink-connectors/flink-connector-cassandra/pom.xml
+++ b/flink-connectors/flink-connector-cassandra/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-elasticsearch-base/pom.xml b/flink-connectors/flink-connector-elasticsearch-base/pom.xml
index 4b4c93c..3719927 100644
--- a/flink-connectors/flink-connector-elasticsearch-base/pom.xml
+++ b/flink-connectors/flink-connector-elasticsearch-base/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-elasticsearch/pom.xml b/flink-connectors/flink-connector-elasticsearch/pom.xml
index 1714ec3..548a207 100644
--- a/flink-connectors/flink-connector-elasticsearch/pom.xml
+++ b/flink-connectors/flink-connector-elasticsearch/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-elasticsearch2/pom.xml b/flink-connectors/flink-connector-elasticsearch2/pom.xml
index 1068c1b..0b54a28 100644
--- a/flink-connectors/flink-connector-elasticsearch2/pom.xml
+++ b/flink-connectors/flink-connector-elasticsearch2/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-elasticsearch5/pom.xml b/flink-connectors/flink-connector-elasticsearch5/pom.xml
index fc97294..f535b2d 100644
--- a/flink-connectors/flink-connector-elasticsearch5/pom.xml
+++ b/flink-connectors/flink-connector-elasticsearch5/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-elasticsearch6/pom.xml b/flink-connectors/flink-connector-elasticsearch6/pom.xml
index 4af64cb..65e3c93 100644
--- a/flink-connectors/flink-connector-elasticsearch6/pom.xml
+++ b/flink-connectors/flink-connector-elasticsearch6/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-filesystem/pom.xml b/flink-connectors/flink-connector-filesystem/pom.xml
index e8dd6b0..d078ab5 100644
--- a/flink-connectors/flink-connector-filesystem/pom.xml
+++ b/flink-connectors/flink-connector-filesystem/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kafka-0.10/pom.xml b/flink-connectors/flink-connector-kafka-0.10/pom.xml
index 9b2353d..138d6e4 100644
--- a/flink-connectors/flink-connector-kafka-0.10/pom.xml
+++ b/flink-connectors/flink-connector-kafka-0.10/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kafka-0.11/pom.xml b/flink-connectors/flink-connector-kafka-0.11/pom.xml
index 4ff1d96..d8d97609 100644
--- a/flink-connectors/flink-connector-kafka-0.11/pom.xml
+++ b/flink-connectors/flink-connector-kafka-0.11/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kafka-0.8/pom.xml b/flink-connectors/flink-connector-kafka-0.8/pom.xml
index 7750ef3..4473e4f 100644
--- a/flink-connectors/flink-connector-kafka-0.8/pom.xml
+++ b/flink-connectors/flink-connector-kafka-0.8/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kafka-0.9/pom.xml b/flink-connectors/flink-connector-kafka-0.9/pom.xml
index 74ada66..bc4f3af 100644
--- a/flink-connectors/flink-connector-kafka-0.9/pom.xml
+++ b/flink-connectors/flink-connector-kafka-0.9/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kafka-base/pom.xml b/flink-connectors/flink-connector-kafka-base/pom.xml
index 1694afe..088edfc 100644
--- a/flink-connectors/flink-connector-kafka-base/pom.xml
+++ b/flink-connectors/flink-connector-kafka-base/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-kinesis/pom.xml b/flink-connectors/flink-connector-kinesis/pom.xml
index 62b9539..4095237 100644
--- a/flink-connectors/flink-connector-kinesis/pom.xml
+++ b/flink-connectors/flink-connector-kinesis/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-nifi/pom.xml b/flink-connectors/flink-connector-nifi/pom.xml
index a237673..9c8b458 100644
--- a/flink-connectors/flink-connector-nifi/pom.xml
+++ b/flink-connectors/flink-connector-nifi/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-rabbitmq/pom.xml b/flink-connectors/flink-connector-rabbitmq/pom.xml
index 0a95498..37a8320 100644
--- a/flink-connectors/flink-connector-rabbitmq/pom.xml
+++ b/flink-connectors/flink-connector-rabbitmq/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-connector-twitter/pom.xml b/flink-connectors/flink-connector-twitter/pom.xml
index a64b4e7..f0ed566 100644
--- a/flink-connectors/flink-connector-twitter/pom.xml
+++ b/flink-connectors/flink-connector-twitter/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-hadoop-compatibility/pom.xml b/flink-connectors/flink-hadoop-compatibility/pom.xml
index 1e5ed94..ced902b 100644
--- a/flink-connectors/flink-hadoop-compatibility/pom.xml
+++ b/flink-connectors/flink-hadoop-compatibility/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-hbase/pom.xml b/flink-connectors/flink-hbase/pom.xml
index 15774c8..cc6ade9 100644
--- a/flink-connectors/flink-hbase/pom.xml
+++ b/flink-connectors/flink-hbase/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-hcatalog/pom.xml b/flink-connectors/flink-hcatalog/pom.xml
index 087559f..9cd41f8 100644
--- a/flink-connectors/flink-hcatalog/pom.xml
+++ b/flink-connectors/flink-hcatalog/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-jdbc/pom.xml b/flink-connectors/flink-jdbc/pom.xml
index ec84afb..9918057 100644
--- a/flink-connectors/flink-jdbc/pom.xml
+++ b/flink-connectors/flink-jdbc/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/flink-orc/pom.xml b/flink-connectors/flink-orc/pom.xml
index 09676ea..23a5ff1 100644
--- a/flink-connectors/flink-orc/pom.xml
+++ b/flink-connectors/flink-orc/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-connectors</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-connectors/pom.xml b/flink-connectors/pom.xml
index 3ff1398..c32b3c2 100644
--- a/flink-connectors/pom.xml
+++ b/flink-connectors/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-container/pom.xml b/flink-container/pom.xml
index b20d321..62f65a1 100644
--- a/flink-container/pom.xml
+++ b/flink-container/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-contrib/flink-connector-wikiedits/pom.xml b/flink-contrib/flink-connector-wikiedits/pom.xml
index a57aed6..3cd9d78 100644
--- a/flink-contrib/flink-connector-wikiedits/pom.xml
+++ b/flink-contrib/flink-connector-wikiedits/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-contrib</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-contrib/flink-storm-examples/pom.xml b/flink-contrib/flink-storm-examples/pom.xml
index 90ff4ec..00375d1 100644
--- a/flink-contrib/flink-storm-examples/pom.xml
+++ b/flink-contrib/flink-storm-examples/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-contrib</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-contrib/flink-storm/pom.xml b/flink-contrib/flink-storm/pom.xml
index fb52a93..a667f1f 100644
--- a/flink-contrib/flink-storm/pom.xml
+++ b/flink-contrib/flink-storm/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-contrib</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-contrib/pom.xml b/flink-contrib/pom.xml
index 5d93571..6d80f36 100644
--- a/flink-contrib/pom.xml
+++ b/flink-contrib/pom.xml
@@ -27,7 +27,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-core/pom.xml b/flink-core/pom.xml
index 98a2ff9..a9ca646 100644
--- a/flink-core/pom.xml
+++ b/flink-core/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-dist/pom.xml b/flink-dist/pom.xml
index 730b606..88edfaa 100644
--- a/flink-dist/pom.xml
+++ b/flink-dist/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-docs/pom.xml b/flink-docs/pom.xml
index b7709f5..349fd8a 100644
--- a/flink-docs/pom.xml
+++ b/flink-docs/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-bucketing-sink-test/pom.xml b/flink-end-to-end-tests/flink-bucketing-sink-test/pom.xml
index 559daab..0228275 100644
--- a/flink-end-to-end-tests/flink-bucketing-sink-test/pom.xml
+++ b/flink-end-to-end-tests/flink-bucketing-sink-test/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-confluent-schema-registry/pom.xml b/flink-end-to-end-tests/flink-confluent-schema-registry/pom.xml
index 88e701b..495f2b6 100644
--- a/flink-end-to-end-tests/flink-confluent-schema-registry/pom.xml
+++ b/flink-end-to-end-tests/flink-confluent-schema-registry/pom.xml
@@ -22,7 +22,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-dataset-allround-test/pom.xml b/flink-end-to-end-tests/flink-dataset-allround-test/pom.xml
index 34c5119..8f1d97f 100644
--- a/flink-end-to-end-tests/flink-dataset-allround-test/pom.xml
+++ b/flink-end-to-end-tests/flink-dataset-allround-test/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-datastream-allround-test/pom.xml b/flink-end-to-end-tests/flink-datastream-allround-test/pom.xml
index 50990a3..e3b5f20 100644
--- a/flink-end-to-end-tests/flink-datastream-allround-test/pom.xml
+++ b/flink-end-to-end-tests/flink-datastream-allround-test/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-distributed-cache-via-blob-test/pom.xml b/flink-end-to-end-tests/flink-distributed-cache-via-blob-test/pom.xml
index 5cc7d65..cbd12dd 100644
--- a/flink-end-to-end-tests/flink-distributed-cache-via-blob-test/pom.xml
+++ b/flink-end-to-end-tests/flink-distributed-cache-via-blob-test/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-elasticsearch1-test/pom.xml b/flink-end-to-end-tests/flink-elasticsearch1-test/pom.xml
index d8dc619..021ed23 100644
--- a/flink-end-to-end-tests/flink-elasticsearch1-test/pom.xml
+++ b/flink-end-to-end-tests/flink-elasticsearch1-test/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-elasticsearch2-test/pom.xml b/flink-end-to-end-tests/flink-elasticsearch2-test/pom.xml
index dcbba87..9e6393f 100644
--- a/flink-end-to-end-tests/flink-elasticsearch2-test/pom.xml
+++ b/flink-end-to-end-tests/flink-elasticsearch2-test/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-elasticsearch5-test/pom.xml b/flink-end-to-end-tests/flink-elasticsearch5-test/pom.xml
index 36db1bc..682afab 100644
--- a/flink-end-to-end-tests/flink-elasticsearch5-test/pom.xml
+++ b/flink-end-to-end-tests/flink-elasticsearch5-test/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-elasticsearch6-test/pom.xml b/flink-end-to-end-tests/flink-elasticsearch6-test/pom.xml
index 03be6d7..1c7c9f9 100644
--- a/flink-end-to-end-tests/flink-elasticsearch6-test/pom.xml
+++ b/flink-end-to-end-tests/flink-elasticsearch6-test/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-high-parallelism-iterations-test/pom.xml b/flink-end-to-end-tests/flink-high-parallelism-iterations-test/pom.xml
index 2ae41ac..5f44e49 100644
--- a/flink-end-to-end-tests/flink-high-parallelism-iterations-test/pom.xml
+++ b/flink-end-to-end-tests/flink-high-parallelism-iterations-test/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-local-recovery-and-allocation-test/pom.xml b/flink-end-to-end-tests/flink-local-recovery-and-allocation-test/pom.xml
index 4fdaaea..10e749a 100644
--- a/flink-end-to-end-tests/flink-local-recovery-and-allocation-test/pom.xml
+++ b/flink-end-to-end-tests/flink-local-recovery-and-allocation-test/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-parent-child-classloading-test/pom.xml b/flink-end-to-end-tests/flink-parent-child-classloading-test/pom.xml
index 3e48636..dec488b 100644
--- a/flink-end-to-end-tests/flink-parent-child-classloading-test/pom.xml
+++ b/flink-end-to-end-tests/flink-parent-child-classloading-test/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-queryable-state-test/pom.xml b/flink-end-to-end-tests/flink-queryable-state-test/pom.xml
index 84e2eee..367d819 100644
--- a/flink-end-to-end-tests/flink-queryable-state-test/pom.xml
+++ b/flink-end-to-end-tests/flink-queryable-state-test/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-quickstart-test/pom.xml b/flink-end-to-end-tests/flink-quickstart-test/pom.xml
index 46b402d..42c3b20 100644
--- a/flink-end-to-end-tests/flink-quickstart-test/pom.xml
+++ b/flink-end-to-end-tests/flink-quickstart-test/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-sql-client-test/pom.xml b/flink-end-to-end-tests/flink-sql-client-test/pom.xml
index 0baa514..1cbb219 100644
--- a/flink-end-to-end-tests/flink-sql-client-test/pom.xml
+++ b/flink-end-to-end-tests/flink-sql-client-test/pom.xml
@@ -22,7 +22,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-stream-sql-test/pom.xml b/flink-end-to-end-tests/flink-stream-sql-test/pom.xml
index 90806b5..55b4035 100644
--- a/flink-end-to-end-tests/flink-stream-sql-test/pom.xml
+++ b/flink-end-to-end-tests/flink-stream-sql-test/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-stream-state-ttl-test/pom.xml b/flink-end-to-end-tests/flink-stream-state-ttl-test/pom.xml
index 5944935..203d7af 100644
--- a/flink-end-to-end-tests/flink-stream-state-ttl-test/pom.xml
+++ b/flink-end-to-end-tests/flink-stream-state-ttl-test/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-end-to-end-tests</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-end-to-end-tests/flink-stream-stateful-job-upgrade-test/pom.xml b/flink-end-to-end-tests/flink-stream-stateful-job-upgrade-test/pom.xml
index 974513c..d21b99f 100644
--- a/flink-end-to-end-tests/flink-stream-stateful-job-upgrade-test/pom.xml
+++ b/flink-end-to-end-tests/flink-stream-stateful-job-upgrade-test/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-end-to-end-tests/flink-streaming-file-sink-test/pom.xml b/flink-end-to-end-tests/flink-streaming-file-sink-test/pom.xml
index 50b290c..c368afe 100644
--- a/flink-end-to-end-tests/flink-streaming-file-sink-test/pom.xml
+++ b/flink-end-to-end-tests/flink-streaming-file-sink-test/pom.xml
@@ -22,7 +22,7 @@
 	<parent>
 		<artifactId>flink-end-to-end-tests</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 
 	<modelVersion>4.0.0</modelVersion>
diff --git a/flink-end-to-end-tests/pom.xml b/flink-end-to-end-tests/pom.xml
index 3c3ad90..2389790 100644
--- a/flink-end-to-end-tests/pom.xml
+++ b/flink-end-to-end-tests/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-batch/pom.xml b/flink-examples/flink-examples-batch/pom.xml
index a8e455c..1a46f7b 100644
--- a/flink-examples/flink-examples-batch/pom.xml
+++ b/flink-examples/flink-examples-batch/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-examples</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-build-helper/flink-examples-streaming-kafka/pom.xml b/flink-examples/flink-examples-build-helper/flink-examples-streaming-kafka/pom.xml
index 8937879..8b82a4c 100644
--- a/flink-examples/flink-examples-build-helper/flink-examples-streaming-kafka/pom.xml
+++ b/flink-examples/flink-examples-build-helper/flink-examples-streaming-kafka/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-examples-build-helper</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-build-helper/flink-examples-streaming-state-machine/pom.xml b/flink-examples/flink-examples-build-helper/flink-examples-streaming-state-machine/pom.xml
index 94190fe..2a8afa5 100644
--- a/flink-examples/flink-examples-build-helper/flink-examples-streaming-state-machine/pom.xml
+++ b/flink-examples/flink-examples-build-helper/flink-examples-streaming-state-machine/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-examples-build-helper</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-build-helper/flink-examples-streaming-twitter/pom.xml b/flink-examples/flink-examples-build-helper/flink-examples-streaming-twitter/pom.xml
index 1f21575..8b51fe6 100644
--- a/flink-examples/flink-examples-build-helper/flink-examples-streaming-twitter/pom.xml
+++ b/flink-examples/flink-examples-build-helper/flink-examples-streaming-twitter/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-examples-build-helper</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-build-helper/pom.xml b/flink-examples/flink-examples-build-helper/pom.xml
index 37a6f2a..6e49c96 100644
--- a/flink-examples/flink-examples-build-helper/pom.xml
+++ b/flink-examples/flink-examples-build-helper/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<artifactId>flink-examples</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-streaming/pom.xml b/flink-examples/flink-examples-streaming/pom.xml
index 27c0da8..591c20c 100644
--- a/flink-examples/flink-examples-streaming/pom.xml
+++ b/flink-examples/flink-examples-streaming/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-examples</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/flink-examples-table/pom.xml b/flink-examples/flink-examples-table/pom.xml
index 3eb53e6..70d1d1e 100644
--- a/flink-examples/flink-examples-table/pom.xml
+++ b/flink-examples/flink-examples-table/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-examples</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-examples/pom.xml b/flink-examples/pom.xml
index 497330c..69d6e9b 100644
--- a/flink-examples/pom.xml
+++ b/flink-examples/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/flink-hadoop-fs/pom.xml b/flink-filesystems/flink-hadoop-fs/pom.xml
index 6137036..3cdb557 100644
--- a/flink-filesystems/flink-hadoop-fs/pom.xml
+++ b/flink-filesystems/flink-hadoop-fs/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-filesystems</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/flink-mapr-fs/pom.xml b/flink-filesystems/flink-mapr-fs/pom.xml
index d67b902..98e2122 100644
--- a/flink-filesystems/flink-mapr-fs/pom.xml
+++ b/flink-filesystems/flink-mapr-fs/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-filesystems</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/flink-s3-fs-hadoop/pom.xml b/flink-filesystems/flink-s3-fs-hadoop/pom.xml
index 5dd911e..6706eff 100644
--- a/flink-filesystems/flink-s3-fs-hadoop/pom.xml
+++ b/flink-filesystems/flink-s3-fs-hadoop/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-filesystems</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/flink-s3-fs-presto/pom.xml b/flink-filesystems/flink-s3-fs-presto/pom.xml
index 9d7dfea..f056110 100644
--- a/flink-filesystems/flink-s3-fs-presto/pom.xml
+++ b/flink-filesystems/flink-s3-fs-presto/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-filesystems</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/flink-swift-fs-hadoop/pom.xml b/flink-filesystems/flink-swift-fs-hadoop/pom.xml
index 200454f..e5ce02a 100644
--- a/flink-filesystems/flink-swift-fs-hadoop/pom.xml
+++ b/flink-filesystems/flink-swift-fs-hadoop/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-filesystems</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-filesystems/pom.xml b/flink-filesystems/pom.xml
index 25e0bbb..2db30bc 100644
--- a/flink-filesystems/pom.xml
+++ b/flink-filesystems/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-formats/flink-avro-confluent-registry/pom.xml b/flink-formats/flink-avro-confluent-registry/pom.xml
index be28b49..82387cb 100644
--- a/flink-formats/flink-avro-confluent-registry/pom.xml
+++ b/flink-formats/flink-avro-confluent-registry/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<artifactId>flink-formats</artifactId>
 		<groupId>org.apache.flink</groupId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 	</parent>
 	<modelVersion>4.0.0</modelVersion>
 
diff --git a/flink-formats/flink-avro/pom.xml b/flink-formats/flink-avro/pom.xml
index f313978..754bd7d 100644
--- a/flink-formats/flink-avro/pom.xml
+++ b/flink-formats/flink-avro/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-formats</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-formats/flink-json/pom.xml b/flink-formats/flink-json/pom.xml
index 9884ff6..5ceb67b 100644
--- a/flink-formats/flink-json/pom.xml
+++ b/flink-formats/flink-json/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-formats</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-formats/flink-parquet/pom.xml b/flink-formats/flink-parquet/pom.xml
index 14e61ea..bad5815 100644
--- a/flink-formats/flink-parquet/pom.xml
+++ b/flink-formats/flink-parquet/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-formats</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-formats/pom.xml b/flink-formats/pom.xml
index 869683f..8ef9f26 100644
--- a/flink-formats/pom.xml
+++ b/flink-formats/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-fs-tests/pom.xml b/flink-fs-tests/pom.xml
index ceb78da..1789554 100644
--- a/flink-fs-tests/pom.xml
+++ b/flink-fs-tests/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-java/pom.xml b/flink-java/pom.xml
index c1e3241..c77d491 100644
--- a/flink-java/pom.xml
+++ b/flink-java/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-cep-scala/pom.xml b/flink-libraries/flink-cep-scala/pom.xml
index f00fbf4..6501e1b 100644
--- a/flink-libraries/flink-cep-scala/pom.xml
+++ b/flink-libraries/flink-cep-scala/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.apache.flink</groupId>
         <artifactId>flink-libraries</artifactId>
-        <version>1.6-SNAPSHOT</version>
+        <version>1.6.4</version>
         <relativePath>..</relativePath>
     </parent>
     
diff --git a/flink-libraries/flink-cep/pom.xml b/flink-libraries/flink-cep/pom.xml
index 04c4c04..a7037a4 100644
--- a/flink-libraries/flink-cep/pom.xml
+++ b/flink-libraries/flink-cep/pom.xml
@@ -26,7 +26,7 @@
     <parent>
         <groupId>org.apache.flink</groupId>
         <artifactId>flink-libraries</artifactId>
-        <version>1.6-SNAPSHOT</version>
+        <version>1.6.4</version>
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/flink-libraries/flink-gelly-examples/pom.xml b/flink-libraries/flink-gelly-examples/pom.xml
index fc2e4b9..416ad2c 100644
--- a/flink-libraries/flink-gelly-examples/pom.xml
+++ b/flink-libraries/flink-gelly-examples/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-gelly-scala/pom.xml b/flink-libraries/flink-gelly-scala/pom.xml
index 50ac01e..fec4434 100644
--- a/flink-libraries/flink-gelly-scala/pom.xml
+++ b/flink-libraries/flink-gelly-scala/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.flink</groupId>
         <artifactId>flink-libraries</artifactId>
-        <version>1.6-SNAPSHOT</version>
+        <version>1.6.4</version>
         <relativePath>..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/flink-libraries/flink-gelly/pom.xml b/flink-libraries/flink-gelly/pom.xml
index 52730c5..fc09a43 100644
--- a/flink-libraries/flink-gelly/pom.xml
+++ b/flink-libraries/flink-gelly/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-ml/pom.xml b/flink-libraries/flink-ml/pom.xml
index 157124a..6953a1a 100644
--- a/flink-libraries/flink-ml/pom.xml
+++ b/flink-libraries/flink-ml/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-python/pom.xml b/flink-libraries/flink-python/pom.xml
index 3fd866b..4871b02 100644
--- a/flink-libraries/flink-python/pom.xml
+++ b/flink-libraries/flink-python/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.flink</groupId>
         <artifactId>flink-libraries</artifactId>
-        <version>1.6-SNAPSHOT</version>
+        <version>1.6.4</version>
         <relativePath>..</relativePath>
     </parent>
 
diff --git a/flink-libraries/flink-sql-client/pom.xml b/flink-libraries/flink-sql-client/pom.xml
index e28a752..02a167e 100644
--- a/flink-libraries/flink-sql-client/pom.xml
+++ b/flink-libraries/flink-sql-client/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-streaming-python/pom.xml b/flink-libraries/flink-streaming-python/pom.xml
index c35408c..2caadb9 100644
--- a/flink-libraries/flink-streaming-python/pom.xml
+++ b/flink-libraries/flink-streaming-python/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/flink-table/pom.xml b/flink-libraries/flink-table/pom.xml
index 77d3650..1b24240 100644
--- a/flink-libraries/flink-table/pom.xml
+++ b/flink-libraries/flink-table/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-libraries</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-libraries/pom.xml b/flink-libraries/pom.xml
index f2ddd20..8d142c6 100644
--- a/flink-libraries/pom.xml
+++ b/flink-libraries/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-mesos/pom.xml b/flink-mesos/pom.xml
index e838d62..413f36e 100644
--- a/flink-mesos/pom.xml
+++ b/flink-mesos/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 	
diff --git a/flink-metrics/flink-metrics-core/pom.xml b/flink-metrics/flink-metrics-core/pom.xml
index 6c757c0..b86c95f 100644
--- a/flink-metrics/flink-metrics-core/pom.xml
+++ b/flink-metrics/flink-metrics-core/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-datadog/pom.xml b/flink-metrics/flink-metrics-datadog/pom.xml
index da4c2e5..4323a2a 100644
--- a/flink-metrics/flink-metrics-datadog/pom.xml
+++ b/flink-metrics/flink-metrics-datadog/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-dropwizard/pom.xml b/flink-metrics/flink-metrics-dropwizard/pom.xml
index 4792ae7..8abb574 100644
--- a/flink-metrics/flink-metrics-dropwizard/pom.xml
+++ b/flink-metrics/flink-metrics-dropwizard/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-graphite/pom.xml b/flink-metrics/flink-metrics-graphite/pom.xml
index 16c7e50..6b9d16c6 100644
--- a/flink-metrics/flink-metrics-graphite/pom.xml
+++ b/flink-metrics/flink-metrics-graphite/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-jmx/pom.xml b/flink-metrics/flink-metrics-jmx/pom.xml
index 0b97b19..dfa295b 100644
--- a/flink-metrics/flink-metrics-jmx/pom.xml
+++ b/flink-metrics/flink-metrics-jmx/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-prometheus/pom.xml b/flink-metrics/flink-metrics-prometheus/pom.xml
index 9aad69c..2f055cc 100644
--- a/flink-metrics/flink-metrics-prometheus/pom.xml
+++ b/flink-metrics/flink-metrics-prometheus/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-slf4j/pom.xml b/flink-metrics/flink-metrics-slf4j/pom.xml
index 0a8b0b6..0a06c0b 100644
--- a/flink-metrics/flink-metrics-slf4j/pom.xml
+++ b/flink-metrics/flink-metrics-slf4j/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/flink-metrics-statsd/pom.xml b/flink-metrics/flink-metrics-statsd/pom.xml
index c6583b7..774e72d 100644
--- a/flink-metrics/flink-metrics-statsd/pom.xml
+++ b/flink-metrics/flink-metrics-statsd/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-metrics</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-metrics/pom.xml b/flink-metrics/pom.xml
index b063066..f832237 100644
--- a/flink-metrics/pom.xml
+++ b/flink-metrics/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-optimizer/pom.xml b/flink-optimizer/pom.xml
index d5b6bfb..7580bf9 100644
--- a/flink-optimizer/pom.xml
+++ b/flink-optimizer/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-queryable-state/flink-queryable-state-client-java/pom.xml b/flink-queryable-state/flink-queryable-state-client-java/pom.xml
index 873b2ac..504317d 100644
--- a/flink-queryable-state/flink-queryable-state-client-java/pom.xml
+++ b/flink-queryable-state/flink-queryable-state-client-java/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-queryable-state</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-queryable-state/flink-queryable-state-runtime/pom.xml b/flink-queryable-state/flink-queryable-state-runtime/pom.xml
index 975375e..818594e 100644
--- a/flink-queryable-state/flink-queryable-state-runtime/pom.xml
+++ b/flink-queryable-state/flink-queryable-state-runtime/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-queryable-state</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-queryable-state/pom.xml b/flink-queryable-state/pom.xml
index 2503a93..6bb1e68 100644
--- a/flink-queryable-state/pom.xml
+++ b/flink-queryable-state/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-quickstart/flink-quickstart-java/pom.xml b/flink-quickstart/flink-quickstart-java/pom.xml
index 45d44b0..199789f 100644
--- a/flink-quickstart/flink-quickstart-java/pom.xml
+++ b/flink-quickstart/flink-quickstart-java/pom.xml
@@ -27,7 +27,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-quickstart</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-quickstart/flink-quickstart-scala/pom.xml b/flink-quickstart/flink-quickstart-scala/pom.xml
index 6026f25..afe0b41 100644
--- a/flink-quickstart/flink-quickstart-scala/pom.xml
+++ b/flink-quickstart/flink-quickstart-scala/pom.xml
@@ -27,7 +27,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-quickstart</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-quickstart/pom.xml b/flink-quickstart/pom.xml
index deb891e..b85265a 100644
--- a/flink-quickstart/pom.xml
+++ b/flink-quickstart/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-runtime-web/pom.xml b/flink-runtime-web/pom.xml
index 3d8e3ae..af1f9f7 100644
--- a/flink-runtime-web/pom.xml
+++ b/flink-runtime-web/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-runtime/pom.xml b/flink-runtime/pom.xml
index f6d3a85..a4c850f 100644
--- a/flink-runtime/pom.xml
+++ b/flink-runtime/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-scala-shell/pom.xml b/flink-scala-shell/pom.xml
index f5621bc..c404278 100644
--- a/flink-scala-shell/pom.xml
+++ b/flink-scala-shell/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-scala/pom.xml b/flink-scala/pom.xml
index 6fce155..b9818dc 100644
--- a/flink-scala/pom.xml
+++ b/flink-scala/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-shaded-curator/pom.xml b/flink-shaded-curator/pom.xml
index f623a1e..f46fe4b 100644
--- a/flink-shaded-curator/pom.xml
+++ b/flink-shaded-curator/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-shaded-hadoop/flink-shaded-hadoop2-uber/pom.xml b/flink-shaded-hadoop/flink-shaded-hadoop2-uber/pom.xml
index 91086e4..6ae7f4e 100644
--- a/flink-shaded-hadoop/flink-shaded-hadoop2-uber/pom.xml
+++ b/flink-shaded-hadoop/flink-shaded-hadoop2-uber/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-shaded-hadoop</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-shaded-hadoop/flink-shaded-hadoop2/pom.xml b/flink-shaded-hadoop/flink-shaded-hadoop2/pom.xml
index 7a565ff..e4eb061 100644
--- a/flink-shaded-hadoop/flink-shaded-hadoop2/pom.xml
+++ b/flink-shaded-hadoop/flink-shaded-hadoop2/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-shaded-hadoop</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-shaded-hadoop/flink-shaded-yarn-tests/pom.xml b/flink-shaded-hadoop/flink-shaded-yarn-tests/pom.xml
index d469a95..34f5160 100644
--- a/flink-shaded-hadoop/flink-shaded-yarn-tests/pom.xml
+++ b/flink-shaded-hadoop/flink-shaded-yarn-tests/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-shaded-hadoop</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-shaded-hadoop/pom.xml b/flink-shaded-hadoop/pom.xml
index f0cc3d1..cb86850 100644
--- a/flink-shaded-hadoop/pom.xml
+++ b/flink-shaded-hadoop/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-state-backends/flink-statebackend-rocksdb/pom.xml b/flink-state-backends/flink-statebackend-rocksdb/pom.xml
index b8045dd..16c3894 100644
--- a/flink-state-backends/flink-statebackend-rocksdb/pom.xml
+++ b/flink-state-backends/flink-statebackend-rocksdb/pom.xml
@@ -27,7 +27,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-state-backends</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-state-backends/pom.xml b/flink-state-backends/pom.xml
index d87ceca..b1a6c02 100644
--- a/flink-state-backends/pom.xml
+++ b/flink-state-backends/pom.xml
@@ -27,7 +27,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-streaming-java/pom.xml b/flink-streaming-java/pom.xml
index 8afd295..ce087e1 100644
--- a/flink-streaming-java/pom.xml
+++ b/flink-streaming-java/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-streaming-scala/pom.xml b/flink-streaming-scala/pom.xml
index 7bcf9d7..c37f68a 100644
--- a/flink-streaming-scala/pom.xml
+++ b/flink-streaming-scala/pom.xml
@@ -24,7 +24,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-test-utils-parent/flink-test-utils-junit/pom.xml b/flink-test-utils-parent/flink-test-utils-junit/pom.xml
index 4310c2e..d0c90f7 100644
--- a/flink-test-utils-parent/flink-test-utils-junit/pom.xml
+++ b/flink-test-utils-parent/flink-test-utils-junit/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-test-utils-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-test-utils-parent/flink-test-utils/pom.xml b/flink-test-utils-parent/flink-test-utils/pom.xml
index 35f9409..379a499 100644
--- a/flink-test-utils-parent/flink-test-utils/pom.xml
+++ b/flink-test-utils-parent/flink-test-utils/pom.xml
@@ -25,7 +25,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-test-utils-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-test-utils-parent/pom.xml b/flink-test-utils-parent/pom.xml
index 5fbc668..5676782 100644
--- a/flink-test-utils-parent/pom.xml
+++ b/flink-test-utils-parent/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-tests/pom.xml b/flink-tests/pom.xml
index 8dd131b..fd476de 100644
--- a/flink-tests/pom.xml
+++ b/flink-tests/pom.xml
@@ -26,7 +26,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-yarn-tests/pom.xml b/flink-yarn-tests/pom.xml
index c3204aa..16f0600 100644
--- a/flink-yarn-tests/pom.xml
+++ b/flink-yarn-tests/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/flink-yarn/pom.xml b/flink-yarn/pom.xml
index 729358d..68c32f9 100644
--- a/flink-yarn/pom.xml
+++ b/flink-yarn/pom.xml
@@ -23,7 +23,7 @@
 	<parent>
 		<groupId>org.apache.flink</groupId>
 		<artifactId>flink-parent</artifactId>
-		<version>1.6-SNAPSHOT</version>
+		<version>1.6.4</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/pom.xml b/pom.xml
index fd003a9..f95fb3c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
 
 	<groupId>org.apache.flink</groupId>
 	<artifactId>flink-parent</artifactId>
-	<version>1.6-SNAPSHOT</version>
+	<version>1.6.4</version>
 
 	<name>flink</name>
 	<packaging>pom</packaging>
@@ -143,7 +143,7 @@
 		<dependency>
 			<groupId>org.apache.flink</groupId>
 			<artifactId>force-shading</artifactId>
-			<version>1.6-SNAPSHOT</version>
+			<version>1.6.4</version>
 		</dependency>
 
 		<!-- Root dependencies for all projects -->
diff --git a/tools/force-shading/pom.xml b/tools/force-shading/pom.xml
index ad322c5..5fb646d 100644
--- a/tools/force-shading/pom.xml
+++ b/tools/force-shading/pom.xml
@@ -38,7 +38,7 @@
 
 	<groupId>org.apache.flink</groupId>
 	<artifactId>force-shading</artifactId>
-	<version>1.6-SNAPSHOT</version>
+	<version>1.6.4</version>
 
 	<packaging>jar</packaging>