diff --git a/benchmarks/pom.xml b/benchmarks/pom.xml
index ded106014e..9a683404bd 100644
--- a/benchmarks/pom.xml
+++ b/benchmarks/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>3.1-SNAPSHOT</version>
+      <version>3.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug-benchmarks</artifactId>
diff --git a/core/pom.xml b/core/pom.xml
index e19a73881c..3299af745c 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>3.1-SNAPSHOT</version>
+      <version>3.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug</artifactId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 2bc49fb6b9..90947cbab9 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>3.1-SNAPSHOT</version>
+      <version>3.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug-examples</artifactId>
diff --git a/pom.xml b/pom.xml
index 2c81e9b0f7..cd1400ef7d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
   <groupId>com.google.mug</groupId>
   <artifactId>mug-root</artifactId>
   <packaging>pom</packaging>
-  <version>3.1-SNAPSHOT</version>
+  <version>3.1</version>
 
   <name>mug-root</name>
 
@@ -35,7 +35,7 @@
     <url>http://github.com/google/mug</url>
     <connection>scm:git:git@github.com:google/mug.git</connection>
     <developerConnection>scm:git:git@github.com:google/mug.git</developerConnection>
-    <tag>mug-root-1.0</tag>
+    <tag>mug-root-3.1</tag>
   </scm>
 
   <developers>