[maven-release-plugin] prepare release 3.1.0
diff --git a/openjpa-all/pom.xml b/openjpa-all/pom.xml
index 82ebfaa..3df1dbd 100644
--- a/openjpa-all/pom.xml
+++ b/openjpa-all/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-all</artifactId>
diff --git a/openjpa-examples/image-gallery/pom.xml b/openjpa-examples/image-gallery/pom.xml
index 8a2e7f5..48c33fc 100644
--- a/openjpa-examples/image-gallery/pom.xml
+++ b/openjpa-examples/image-gallery/pom.xml
@@ -27,7 +27,7 @@
   <parent>
       <groupId>org.apache.openjpa</groupId>
       <artifactId>openjpa-examples</artifactId>
-      <version>3.1.0-SNAPSHOT</version>
+      <version>3.1.0</version>
   </parent>
 
   <groupId>org.apache.openjpa.openjpa-examples</groupId>
diff --git a/openjpa-examples/openbooks/pom.xml b/openjpa-examples/openbooks/pom.xml
index a8f51b8..cf99d0c 100644
--- a/openjpa-examples/openbooks/pom.xml
+++ b/openjpa-examples/openbooks/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-examples</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <groupId>org.apache.openjpa.openjpa-examples</groupId>
diff --git a/openjpa-examples/pom.xml b/openjpa-examples/pom.xml
index 4738751..e1d626b 100644
--- a/openjpa-examples/pom.xml
+++ b/openjpa-examples/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-examples</artifactId>
diff --git a/openjpa-examples/simple/pom.xml b/openjpa-examples/simple/pom.xml
index a3261d9..281b2f7 100644
--- a/openjpa-examples/simple/pom.xml
+++ b/openjpa-examples/simple/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-examples</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <groupId>org.apache.openjpa.openjpa-examples</groupId>
diff --git a/openjpa-features/pom.xml b/openjpa-features/pom.xml
index 8db1664..f19e462 100644
--- a/openjpa-features/pom.xml
+++ b/openjpa-features/pom.xml
@@ -18,7 +18,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-features</artifactId>
diff --git a/openjpa-integration/daytrader/pom.xml b/openjpa-integration/daytrader/pom.xml
index 76034c2..8e16c83 100644
--- a/openjpa-integration/daytrader/pom.xml
+++ b/openjpa-integration/daytrader/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-daytrader</artifactId>
diff --git a/openjpa-integration/examples/pom.xml b/openjpa-integration/examples/pom.xml
index 217752b..4dca6ed 100644
--- a/openjpa-integration/examples/pom.xml
+++ b/openjpa-integration/examples/pom.xml
@@ -37,7 +37,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-examples</artifactId>
diff --git a/openjpa-integration/jmx/pom.xml b/openjpa-integration/jmx/pom.xml
index 969dbf5..7d40a43 100644
--- a/openjpa-integration/jmx/pom.xml
+++ b/openjpa-integration/jmx/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-jmx</artifactId>
diff --git a/openjpa-integration/pom.xml b/openjpa-integration/pom.xml
index 46db915..dbbebdd 100644
--- a/openjpa-integration/pom.xml
+++ b/openjpa-integration/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration</artifactId>
diff --git a/openjpa-integration/slf4j/pom.xml b/openjpa-integration/slf4j/pom.xml
index 35faf2d..0296cc4 100644
--- a/openjpa-integration/slf4j/pom.xml
+++ b/openjpa-integration/slf4j/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-slf4j</artifactId>
diff --git a/openjpa-integration/tck/pom.xml b/openjpa-integration/tck/pom.xml
index 60b047a..f727c99 100644
--- a/openjpa-integration/tck/pom.xml
+++ b/openjpa-integration/tck/pom.xml
@@ -78,7 +78,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-tck</artifactId>
diff --git a/openjpa-integration/validation/pom.xml b/openjpa-integration/validation/pom.xml
index 69f6d13..aa0c6d4 100644
--- a/openjpa-integration/validation/pom.xml
+++ b/openjpa-integration/validation/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-integration</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-integration-validation</artifactId>
diff --git a/openjpa-jdbc/pom.xml b/openjpa-jdbc/pom.xml
index cd34453..e3c3379 100644
--- a/openjpa-jdbc/pom.xml
+++ b/openjpa-jdbc/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-jdbc</artifactId>
diff --git a/openjpa-jest/pom.xml b/openjpa-jest/pom.xml
index 4d9e39f..80a8857 100644
--- a/openjpa-jest/pom.xml
+++ b/openjpa-jest/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-jest</artifactId>
diff --git a/openjpa-kernel/pom.xml b/openjpa-kernel/pom.xml
index 7f6a939..cb9f5a1 100644
--- a/openjpa-kernel/pom.xml
+++ b/openjpa-kernel/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-kernel</artifactId>
diff --git a/openjpa-lib/pom.xml b/openjpa-lib/pom.xml
index 32a9e97..d0cd45a 100644
--- a/openjpa-lib/pom.xml
+++ b/openjpa-lib/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-lib</artifactId>
diff --git a/openjpa-persistence-jdbc/pom.xml b/openjpa-persistence-jdbc/pom.xml
index ddeea4e..49d2370 100644
--- a/openjpa-persistence-jdbc/pom.xml
+++ b/openjpa-persistence-jdbc/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-persistence-jdbc</artifactId>
diff --git a/openjpa-persistence-locking/pom.xml b/openjpa-persistence-locking/pom.xml
index 8cd83b3..cf709e1 100644
--- a/openjpa-persistence-locking/pom.xml
+++ b/openjpa-persistence-locking/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-persistence-locking</artifactId>
diff --git a/openjpa-persistence/pom.xml b/openjpa-persistence/pom.xml
index 8cefff9..c29328c 100644
--- a/openjpa-persistence/pom.xml
+++ b/openjpa-persistence/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-persistence</artifactId>
diff --git a/openjpa-project/pom.xml b/openjpa-project/pom.xml
index a764e37..0db6b52 100644
--- a/openjpa-project/pom.xml
+++ b/openjpa-project/pom.xml
@@ -39,7 +39,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>apache-openjpa</artifactId>
diff --git a/openjpa-slice/pom.xml b/openjpa-slice/pom.xml
index f52065d..25b3479 100644
--- a/openjpa-slice/pom.xml
+++ b/openjpa-slice/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-slice</artifactId>
diff --git a/openjpa-tools/openjpa-fetch-statistics-was/pom.xml b/openjpa-tools/openjpa-fetch-statistics-was/pom.xml
index f4af662..40bd4f8 100644
--- a/openjpa-tools/openjpa-fetch-statistics-was/pom.xml
+++ b/openjpa-tools/openjpa-fetch-statistics-was/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-tools</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-fetch-statistics-was</artifactId>
diff --git a/openjpa-tools/openjpa-fetch-statistics/pom.xml b/openjpa-tools/openjpa-fetch-statistics/pom.xml
index a8aba05..db71046 100644
--- a/openjpa-tools/openjpa-fetch-statistics/pom.xml
+++ b/openjpa-tools/openjpa-fetch-statistics/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-tools</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-fetch-statistics</artifactId>
diff --git a/openjpa-tools/openjpa-maven-plugin/pom.xml b/openjpa-tools/openjpa-maven-plugin/pom.xml
index 6d5e66e..9894b3b 100644
--- a/openjpa-tools/openjpa-maven-plugin/pom.xml
+++ b/openjpa-tools/openjpa-maven-plugin/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-tools</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/openjpa-tools/pom.xml b/openjpa-tools/pom.xml
index db99ca1..8edb391 100644
--- a/openjpa-tools/pom.xml
+++ b/openjpa-tools/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
 <!--        <relativePath>../pom.xml</relativePath>-->
     </parent>
 
diff --git a/openjpa-xmlstore/pom.xml b/openjpa-xmlstore/pom.xml
index 868125c..e604c49 100644
--- a/openjpa-xmlstore/pom.xml
+++ b/openjpa-xmlstore/pom.xml
@@ -27,7 +27,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa-xmlstore</artifactId>
diff --git a/openjpa/pom.xml b/openjpa/pom.xml
index eb69ba8..e947e57 100644
--- a/openjpa/pom.xml
+++ b/openjpa/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>org.apache.openjpa</groupId>
         <artifactId>openjpa-parent</artifactId>
-        <version>3.1.0-SNAPSHOT</version>
+        <version>3.1.0</version>
     </parent>
 
     <artifactId>openjpa</artifactId>
diff --git a/pom.xml b/pom.xml
index 586ccbd..436db2d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -36,7 +36,7 @@
     <name>OpenJPA Parent POM</name>
     <description>Apache OpenJPA implementation of JSR-338 JPA 2.1</description>
 
-    <version>3.1.0-SNAPSHOT</version>
+    <version>3.1.0</version>
 
     <properties>
         <java.class.version>1.8</java.class.version>
@@ -160,7 +160,8 @@
         <connection>scm:git:https://gitbox.apache.org/repos/asf/openjpa.git</connection>
         <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/openjpa.git</developerConnection>
         <url>https://gitbox.apache.org/repos/asf/openjpa.git</url>
-    </scm>
+      <tag>3.1.0</tag>
+  </scm>
 
     <modules>
         <module>openjpa-lib</module>