diff --git a/mug-algorithms/pom.xml b/mug-algorithms/pom.xml
index 7d180296c1..ff7547d05e 100644
--- a/mug-algorithms/pom.xml
+++ b/mug-algorithms/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.mug</groupId>
     <artifactId>mug-root</artifactId>
-    <version>8.1-SNAPSHOT</version>
+    <version>8.1</version>
   </parent>
   <artifactId>mug-algorithms</artifactId>
   <name>algorithms</name>
diff --git a/mug-benchmarks/pom.xml b/mug-benchmarks/pom.xml
index 0422bc8421..377580109e 100644
--- a/mug-benchmarks/pom.xml
+++ b/mug-benchmarks/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>8.1-SNAPSHOT</version>
+      <version>8.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug-benchmarks</artifactId>
diff --git a/mug-bigquery/pom.xml b/mug-bigquery/pom.xml
index 1a97fc9f0c..266b6dcc81 100644
--- a/mug-bigquery/pom.xml
+++ b/mug-bigquery/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>8.1-SNAPSHOT</version>
+      <version>8.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug-bigquery</artifactId>
diff --git a/mug-errorprone/pom.xml b/mug-errorprone/pom.xml
index 59508bd486..5426cdabe0 100644
--- a/mug-errorprone/pom.xml
+++ b/mug-errorprone/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.google.mug</groupId>
     <artifactId>mug-root</artifactId>
-    <version>8.1-SNAPSHOT</version>
+    <version>8.1</version>
   </parent>
   <artifactId>mug-errorprone</artifactId>
   <name>Compile-time plugins</name>
diff --git a/mug-examples/pom.xml b/mug-examples/pom.xml
index d6a783c756..f60be4bfce 100644
--- a/mug-examples/pom.xml
+++ b/mug-examples/pom.xml
@@ -3,7 +3,7 @@
   <parent>
       <groupId>com.google.mug</groupId>
       <artifactId>mug-root</artifactId>
-      <version>8.1-SNAPSHOT</version>
+      <version>8.1</version>
       <relativePath>../pom.xml</relativePath>
   </parent>
   <artifactId>mug-examples</artifactId>
diff --git a/mug-guava/pom.xml b/mug-guava/pom.xml
index fb096533d2..3ac35e66ea 100644
--- a/mug-guava/pom.xml
+++ b/mug-guava/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.google.mug</groupId>
     <artifactId>mug-root</artifactId>
-    <version>8.1-SNAPSHOT</version>
+    <version>8.1</version>
   </parent>
   <artifactId>mug-guava</artifactId>
   <packaging>jar</packaging>
diff --git a/mug-protobuf/pom.xml b/mug-protobuf/pom.xml
index 6dccc7605e..6d7bed3064 100644
--- a/mug-protobuf/pom.xml
+++ b/mug-protobuf/pom.xml
@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.google.mug</groupId>
     <artifactId>mug-root</artifactId>
-    <version>8.1-SNAPSHOT</version>
+    <version>8.1</version>
   </parent>
   <artifactId>mug-protobuf</artifactId>
   <packaging>jar</packaging>
diff --git a/mug/pom.xml b/mug/pom.xml
index eace3cafa1..84de4c6dda 100644
--- a/mug/pom.xml
+++ b/mug/pom.xml
@@ -3,7 +3,7 @@
 	<parent>
 		<groupId>com.google.mug</groupId>
 		<artifactId>mug-root</artifactId>
-		<version>8.1-SNAPSHOT</version>
+		<version>8.1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 	<artifactId>mug</artifactId>
diff --git a/pom.xml b/pom.xml
index 4edd31ab34..5e482945e4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <groupId>com.google.mug</groupId>
   <artifactId>mug-root</artifactId>
   <packaging>pom</packaging>
-  <version>8.1-SNAPSHOT</version>
+  <version>8.1</version>
   <name>mug-root</name>
   <description>Google Mug Library</description>
   <url>http://github.com/google/mug</url>
@@ -33,7 +33,7 @@
     <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-8.1</tag>
   </scm>
 
   <developers>