diff --git a/error-prone-contrib/pom.xml b/error-prone-contrib/pom.xml
index e8681ecd..efc598a8 100644
--- a/error-prone-contrib/pom.xml
+++ b/error-prone-contrib/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>tech.picnic.error-prone-support</groupId>
         <artifactId>error-prone-support</artifactId>
-        <version>0.3.1-SNAPSHOT</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>error-prone-contrib</artifactId>
diff --git a/pom.xml b/pom.xml
index 84a6a557..837b59a8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>tech.picnic.error-prone-support</groupId>
     <artifactId>error-prone-support</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0</version>
     <packaging>pom</packaging>
 
     <name>Picnic :: Error Prone Support</name>
@@ -48,7 +48,7 @@
 
     <scm>
         <developerConnection>scm:git:git@github.com:PicnicSupermarket/error-prone-support.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>v0.4.0</tag>
         <url>https://github.com/PicnicSupermarket/error-prone-support</url>
     </scm>
     <issueManagement>
diff --git a/refaster-compiler/pom.xml b/refaster-compiler/pom.xml
index dc43b58d..8fb347b4 100644
--- a/refaster-compiler/pom.xml
+++ b/refaster-compiler/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>tech.picnic.error-prone-support</groupId>
         <artifactId>error-prone-support</artifactId>
-        <version>0.3.1-SNAPSHOT</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>refaster-compiler</artifactId>
diff --git a/refaster-runner/pom.xml b/refaster-runner/pom.xml
index 9bdd3a65..bc2ea699 100644
--- a/refaster-runner/pom.xml
+++ b/refaster-runner/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>tech.picnic.error-prone-support</groupId>
         <artifactId>error-prone-support</artifactId>
-        <version>0.3.1-SNAPSHOT</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>refaster-runner</artifactId>
diff --git a/refaster-support/pom.xml b/refaster-support/pom.xml
index b8a18356..3e7ede5d 100644
--- a/refaster-support/pom.xml
+++ b/refaster-support/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>tech.picnic.error-prone-support</groupId>
         <artifactId>error-prone-support</artifactId>
-        <version>0.3.1-SNAPSHOT</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>refaster-support</artifactId>
diff --git a/refaster-test-support/pom.xml b/refaster-test-support/pom.xml
index 92a3b9bd..34feb0dc 100644
--- a/refaster-test-support/pom.xml
+++ b/refaster-test-support/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>tech.picnic.error-prone-support</groupId>
         <artifactId>error-prone-support</artifactId>
-        <version>0.3.1-SNAPSHOT</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>refaster-test-support</artifactId>