diff --git a/pom.xml b/pom.xml
index ad0e817f..4d663aec 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
 
   <groupId>io.github.ascopes</groupId>
   <artifactId>protobuf-maven-plugin-parent</artifactId>
-  <version>2.6.6-SNAPSHOT</version>
+  <version>2.6.6</version>
 
   <name>Protobuf Maven Plugin Parent</name>
   <description>Parent POM for the Protobuf Maven Plugin.</description>
@@ -92,7 +92,7 @@
     <connection>scm:git:https://github.com/ascopes/protobuf-maven-plugin</connection>
     <developerConnection>scm:git:https://github.com/ascopes/protobuf-maven-plugin
     </developerConnection>
-    <tag>HEAD</tag>
+    <tag>v2.6.6</tag>
   </scm>
 
   <properties>
diff --git a/protobuf-maven-plugin/pom.xml b/protobuf-maven-plugin/pom.xml
index cad2d824..49960bdd 100644
--- a/protobuf-maven-plugin/pom.xml
+++ b/protobuf-maven-plugin/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>io.github.ascopes</groupId>
     <artifactId>protobuf-maven-plugin-parent</artifactId>
-    <version>2.6.6-SNAPSHOT</version>
+    <version>2.6.6</version>
   </parent>
 
   <artifactId>protobuf-maven-plugin</artifactId>