Prepared 3.9.0
diff --git a/pom.xml b/pom.xml
index be5e183..1042aa1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -31,7 +31,7 @@
   <artifactId>parent</artifactId>
   <packaging>pom</packaging>
   <!-- to change version: mvn -B release:update-versions -DdevelopmentVersion=3.6.0-SNAPSHOT -->
-  <version>3.9.0-SNAPSHOT</version>
+  <version>3.9.0</version>
   <name>Apache ZooKeeper</name>
   <description>
     ZooKeeper is a centralized service for maintaining configuration information, naming,
@@ -71,7 +71,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/zookeeper.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/zookeeper.git</developerConnection>
     <url>https://gitbox.apache.org/repos/asf/zookeeper.git</url>
-    <tag>branch-3.9</tag>
+    <tag>release-3.9.0-0</tag>
   </scm>
   <issueManagement>
     <system>JIRA</system>
diff --git a/zookeeper-assembly/pom.xml b/zookeeper-assembly/pom.xml
index 4bdfc74..55d7d69 100755
--- a/zookeeper-assembly/pom.xml
+++ b/zookeeper-assembly/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-assembly</artifactId>
diff --git a/zookeeper-client/pom.xml b/zookeeper-client/pom.xml
index 9d484e6..2afefd7 100755
--- a/zookeeper-client/pom.xml
+++ b/zookeeper-client/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-client</artifactId>
diff --git a/zookeeper-client/zookeeper-client-c/pom.xml b/zookeeper-client/zookeeper-client-c/pom.xml
index da130c9..80b9c47 100755
--- a/zookeeper-client/zookeeper-client-c/pom.xml
+++ b/zookeeper-client/zookeeper-client-c/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-client</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-client-c</artifactId>
diff --git a/zookeeper-compatibility-tests/pom.xml b/zookeeper-compatibility-tests/pom.xml
index ad73b93..402d475 100644
--- a/zookeeper-compatibility-tests/pom.xml
+++ b/zookeeper-compatibility-tests/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.zookeeper</groupId>
         <artifactId>parent</artifactId>
-        <version>3.9.0-SNAPSHOT</version>
+        <version>3.9.0</version>
     </parent>
     <packaging>pom</packaging>
     <modelVersion>4.0.0</modelVersion>
diff --git a/zookeeper-compatibility-tests/zookeeper-compatibility-tests-curator/pom.xml b/zookeeper-compatibility-tests/zookeeper-compatibility-tests-curator/pom.xml
index 02544b3..1f5fad5 100644
--- a/zookeeper-compatibility-tests/zookeeper-compatibility-tests-curator/pom.xml
+++ b/zookeeper-compatibility-tests/zookeeper-compatibility-tests-curator/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.zookeeper</groupId>
         <artifactId>zookeeper-compatibility-tests</artifactId>
-        <version>3.9.0-SNAPSHOT</version>
+        <version>3.9.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/zookeeper-contrib/pom.xml b/zookeeper-contrib/pom.xml
index e0dabd9..e05065b 100755
--- a/zookeeper-contrib/pom.xml
+++ b/zookeeper-contrib/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-contrib</artifactId>
diff --git a/zookeeper-contrib/zookeeper-contrib-fatjar/pom.xml b/zookeeper-contrib/zookeeper-contrib-fatjar/pom.xml
index 172f9c8..77e364a 100755
--- a/zookeeper-contrib/zookeeper-contrib-fatjar/pom.xml
+++ b/zookeeper-contrib/zookeeper-contrib-fatjar/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-contrib</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <groupId>org.apache.zookeeper</groupId>
diff --git a/zookeeper-contrib/zookeeper-contrib-loggraph/pom.xml b/zookeeper-contrib/zookeeper-contrib-loggraph/pom.xml
index 2a47599..31c2a3f 100755
--- a/zookeeper-contrib/zookeeper-contrib-loggraph/pom.xml
+++ b/zookeeper-contrib/zookeeper-contrib-loggraph/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-contrib</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-contrib-loggraph</artifactId>
diff --git a/zookeeper-contrib/zookeeper-contrib-rest/pom.xml b/zookeeper-contrib/zookeeper-contrib-rest/pom.xml
index 6067e19..259347e 100755
--- a/zookeeper-contrib/zookeeper-contrib-rest/pom.xml
+++ b/zookeeper-contrib/zookeeper-contrib-rest/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-contrib</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-contrib-rest</artifactId>
diff --git a/zookeeper-contrib/zookeeper-contrib-zooinspector/pom.xml b/zookeeper-contrib/zookeeper-contrib-zooinspector/pom.xml
index 52ac31a..a8e4e6f 100755
--- a/zookeeper-contrib/zookeeper-contrib-zooinspector/pom.xml
+++ b/zookeeper-contrib/zookeeper-contrib-zooinspector/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-contrib</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-contrib-zooinspector</artifactId>
diff --git a/zookeeper-docs/pom.xml b/zookeeper-docs/pom.xml
index 8878ba9..dd433bd 100644
--- a/zookeeper-docs/pom.xml
+++ b/zookeeper-docs/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-docs</artifactId>
diff --git a/zookeeper-it/pom.xml b/zookeeper-it/pom.xml
index 21ae343..22f1045 100755
--- a/zookeeper-it/pom.xml
+++ b/zookeeper-it/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-it</artifactId>
diff --git a/zookeeper-jute/pom.xml b/zookeeper-jute/pom.xml
index 55d1887..776801e 100755
--- a/zookeeper-jute/pom.xml
+++ b/zookeeper-jute/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-jute</artifactId>
diff --git a/zookeeper-metrics-providers/pom.xml b/zookeeper-metrics-providers/pom.xml
index 9b876a6..929f1d8 100755
--- a/zookeeper-metrics-providers/pom.xml
+++ b/zookeeper-metrics-providers/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-metrics-providers</artifactId>
diff --git a/zookeeper-metrics-providers/zookeeper-prometheus-metrics/pom.xml b/zookeeper-metrics-providers/zookeeper-prometheus-metrics/pom.xml
index 2af310c..46d31c4 100755
--- a/zookeeper-metrics-providers/zookeeper-prometheus-metrics/pom.xml
+++ b/zookeeper-metrics-providers/zookeeper-prometheus-metrics/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-metrics-providers</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-prometheus-metrics</artifactId>
diff --git a/zookeeper-recipes/pom.xml b/zookeeper-recipes/pom.xml
index 9de29b6..606018c 100755
--- a/zookeeper-recipes/pom.xml
+++ b/zookeeper-recipes/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-recipes</artifactId>
diff --git a/zookeeper-recipes/zookeeper-recipes-election/pom.xml b/zookeeper-recipes/zookeeper-recipes-election/pom.xml
index 9767a94..7211a60 100755
--- a/zookeeper-recipes/zookeeper-recipes-election/pom.xml
+++ b/zookeeper-recipes/zookeeper-recipes-election/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-recipes</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-recipes-election</artifactId>
diff --git a/zookeeper-recipes/zookeeper-recipes-lock/pom.xml b/zookeeper-recipes/zookeeper-recipes-lock/pom.xml
index 4f23724..38f2ee2 100755
--- a/zookeeper-recipes/zookeeper-recipes-lock/pom.xml
+++ b/zookeeper-recipes/zookeeper-recipes-lock/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-recipes</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-recipes-lock</artifactId>
diff --git a/zookeeper-recipes/zookeeper-recipes-queue/pom.xml b/zookeeper-recipes/zookeeper-recipes-queue/pom.xml
index 76169c2..fd9093e 100755
--- a/zookeeper-recipes/zookeeper-recipes-queue/pom.xml
+++ b/zookeeper-recipes/zookeeper-recipes-queue/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>zookeeper-recipes</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper-recipes-queue</artifactId>
diff --git a/zookeeper-server/pom.xml b/zookeeper-server/pom.xml
index 2fc6538..eb70dd2 100755
--- a/zookeeper-server/pom.xml
+++ b/zookeeper-server/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.zookeeper</groupId>
     <artifactId>parent</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>zookeeper</artifactId>