diff --git a/apache-maven/pom.xml b/apache-maven/pom.xml
index 08d5f52..db6d208 100644
--- a/apache-maven/pom.xml
+++ b/apache-maven/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>apache-maven</artifactId>
diff --git a/maven-artifact/pom.xml b/maven-artifact/pom.xml
index f766711..99fb1fa 100644
--- a/maven-artifact/pom.xml
+++ b/maven-artifact/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-artifact</artifactId>
diff --git a/maven-builder-support/pom.xml b/maven-builder-support/pom.xml
index 2283787..188c2b9 100644
--- a/maven-builder-support/pom.xml
+++ b/maven-builder-support/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-builder-support</artifactId>
diff --git a/maven-compat/pom.xml b/maven-compat/pom.xml
index b5ce75b..ec26af6 100644
--- a/maven-compat/pom.xml
+++ b/maven-compat/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-compat</artifactId>
diff --git a/maven-core/pom.xml b/maven-core/pom.xml
index cf3c2d5..03b90cf 100644
--- a/maven-core/pom.xml
+++ b/maven-core/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-core</artifactId>
diff --git a/maven-embedder/pom.xml b/maven-embedder/pom.xml
index c454141..220edb9 100644
--- a/maven-embedder/pom.xml
+++ b/maven-embedder/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-embedder</artifactId>
diff --git a/maven-model-builder/pom.xml b/maven-model-builder/pom.xml
index 09ee67f..6db9d51 100644
--- a/maven-model-builder/pom.xml
+++ b/maven-model-builder/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-model-builder</artifactId>
diff --git a/maven-model/pom.xml b/maven-model/pom.xml
index fde5863..5aa986e 100644
--- a/maven-model/pom.xml
+++ b/maven-model/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-model</artifactId>
diff --git a/maven-plugin-api/pom.xml b/maven-plugin-api/pom.xml
index 0a6f1d2..d9eabe3 100644
--- a/maven-plugin-api/pom.xml
+++ b/maven-plugin-api/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-plugin-api</artifactId>
diff --git a/maven-repository-metadata/pom.xml b/maven-repository-metadata/pom.xml
index ef03ffc..1916def 100644
--- a/maven-repository-metadata/pom.xml
+++ b/maven-repository-metadata/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-repository-metadata</artifactId>
diff --git a/maven-resolver-provider/pom.xml b/maven-resolver-provider/pom.xml
index 3839db2..9216013 100644
--- a/maven-resolver-provider/pom.xml
+++ b/maven-resolver-provider/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-resolver-provider</artifactId>
diff --git a/maven-settings-builder/pom.xml b/maven-settings-builder/pom.xml
index f7dd7c1..99a07b5 100644
--- a/maven-settings-builder/pom.xml
+++ b/maven-settings-builder/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-settings-builder</artifactId>
diff --git a/maven-settings/pom.xml b/maven-settings/pom.xml
index 9953f4f..01e7283 100644
--- a/maven-settings/pom.xml
+++ b/maven-settings/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-settings</artifactId>
diff --git a/maven-slf4j-provider/pom.xml b/maven-slf4j-provider/pom.xml
index cca342b..f6a9743 100644
--- a/maven-slf4j-provider/pom.xml
+++ b/maven-slf4j-provider/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.maven</groupId>
     <artifactId>maven</artifactId>
-    <version>3.9.0-SNAPSHOT</version>
+    <version>3.9.0</version>
   </parent>
 
   <artifactId>maven-slf4j-provider</artifactId>
diff --git a/pom.xml b/pom.xml
index fa9b0f6..cddb5ca 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
   </parent>
 
   <artifactId>maven</artifactId>
-  <version>3.9.0-SNAPSHOT</version>
+  <version>3.9.0</version>
   <packaging>pom</packaging>
 
   <name>Apache Maven</name>
@@ -104,7 +104,7 @@
   <scm>
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven.git</developerConnection>
-    <tag>maven-3.8.5</tag>
+    <tag>maven-3.9.0</tag>
     <url>https://github.com/apache/maven/tree/${project.scm.tag}</url>
   </scm>
   <issueManagement>
@@ -154,7 +154,7 @@
     <maven.site.path>ref/3-LATEST</maven.site.path>
     <checkstyle.violation.ignore>None</checkstyle.violation.ignore>
     <checkstyle.excludes>**/package-info.java</checkstyle.excludes>
-    <project.build.outputTimestamp>2022-03-05T11:41:15Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2023-01-31T09:57:07Z</project.build.outputTimestamp>
   </properties>
 
   <!--bootstrap-start-comment-->