diff --git a/pom.xml b/pom.xml
index 4528dbe8..39491973 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>io.protostuff</groupId>
     <artifactId>protostuff-compiler</artifactId>
-    <version>2.0.0-alpha4-SNAPSHOT</version>
+    <version>2.0.0-alpha4</version>
     <packaging>pom</packaging>
 
     <name>Protostuff Compiler</name>
@@ -45,7 +45,7 @@
         <url>https://github.com/protostuff/protostuff-compiler</url>
         <connection>scm:git:https://github.com/protostuff/protostuff-compiler.git</connection>
         <developerConnection>scm:git:git@github.com:protostuff/protostuff-compiler.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>protostuff-compiler-2.0.0-alpha4</tag>
     </scm>
 
     <licenses>
diff --git a/protostuff-cli/pom.xml b/protostuff-cli/pom.xml
index cd7e612e..87b0d5e5 100644
--- a/protostuff-cli/pom.xml
+++ b/protostuff-cli/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>protostuff-compiler</artifactId>
         <groupId>io.protostuff</groupId>
-        <version>2.0.0-alpha4-SNAPSHOT</version>
+        <version>2.0.0-alpha4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/protostuff-generator/pom.xml b/protostuff-generator/pom.xml
index e4b1c52f..4695485d 100644
--- a/protostuff-generator/pom.xml
+++ b/protostuff-generator/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>protostuff-compiler</artifactId>
         <groupId>io.protostuff</groupId>
-        <version>2.0.0-alpha4-SNAPSHOT</version>
+        <version>2.0.0-alpha4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/protostuff-it/pom.xml b/protostuff-it/pom.xml
index 148859ba..7a71c312 100644
--- a/protostuff-it/pom.xml
+++ b/protostuff-it/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>protostuff-compiler</artifactId>
         <groupId>io.protostuff</groupId>
-        <version>2.0.0-alpha4-SNAPSHOT</version>
+        <version>2.0.0-alpha4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/protostuff-maven-plugin/pom.xml b/protostuff-maven-plugin/pom.xml
index 4c1389ca..4be2f8d9 100644
--- a/protostuff-maven-plugin/pom.xml
+++ b/protostuff-maven-plugin/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <artifactId>protostuff-compiler</artifactId>
         <groupId>io.protostuff</groupId>
-        <version>2.0.0-alpha4-SNAPSHOT</version>
+        <version>2.0.0-alpha4</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/protostuff-parser/pom.xml b/protostuff-parser/pom.xml
index 90becccb..25aa33a9 100644
--- a/protostuff-parser/pom.xml
+++ b/protostuff-parser/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>io.protostuff</groupId>
         <artifactId>protostuff-compiler</artifactId>
-        <version>2.0.0-alpha4-SNAPSHOT</version>
+        <version>2.0.0-alpha4</version>
     </parent>
     <artifactId>protostuff-parser</artifactId>
     <name>Protostuff Compiler - Core</name>