diff --git a/apps/pom.xml b/apps/pom.xml
index 9d95457526..20efc9d8ef 100644
--- a/apps/pom.xml
+++ b/apps/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-apps</artifactId>
     <packaging>pom</packaging>
diff --git a/apps/rest-showcase/pom.xml b/apps/rest-showcase/pom.xml
index b7fefb8fce..65a6bb5fac 100644
--- a/apps/rest-showcase/pom.xml
+++ b/apps/rest-showcase/pom.xml
@@ -24,12 +24,12 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-apps</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-rest-showcase</artifactId>
     <packaging>war</packaging>
-    <version>7.0.0-M8</version>
+    <version>7.0.0-M9-SNAPSHOT</version>
     <name>Struts 2 Rest Showcase Webapp</name>
     <description>Struts 2 Rest Showcase Example</description>
 
diff --git a/apps/showcase/pom.xml b/apps/showcase/pom.xml
index f2ac9fe5d4..de25a7d9f3 100644
--- a/apps/showcase/pom.xml
+++ b/apps/showcase/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-apps</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-showcase</artifactId>
diff --git a/assembly/pom.xml b/assembly/pom.xml
index 32454368fa..e51e12ab76 100644
--- a/assembly/pom.xml
+++ b/assembly/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-assembly</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 87542eb5fa..ab7f60bd55 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -25,11 +25,11 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-bom</artifactId>
-    <version>7.0.0-M8</version>
+    <version>7.0.0-M9-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>Struts 2 Bill of Materials</name>
@@ -44,7 +44,7 @@
     </licenses>
 
     <properties>
-        <struts-version.version>7.0.0-M8</struts-version.version>
+        <struts-version.version>7.0.0-M9-SNAPSHOT</struts-version.version>
         <maven.site.skip>true</maven.site.skip>
         <maven.site.deploy.skip>true</maven.site.deploy.skip>
     </properties>
@@ -165,7 +165,7 @@
     </dependencyManagement>
 
   <scm>
-    <tag>STRUTS_7_0_0_M8</tag>
+    <tag>HEAD</tag>
     <connection>scm:git:https://gitbox.apache.org/repos/asf/struts.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/struts.git</developerConnection>
     <url>https://github.com/apache/struts/</url>
diff --git a/core/pom.xml b/core/pom.xml
index f9f0e8eca0..52f1ac8aa7 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-core</artifactId>
     <packaging>jar</packaging>
diff --git a/jakarta/pom.xml b/jakarta/pom.xml
index c7893749cf..445c41b6bd 100644
--- a/jakarta/pom.xml
+++ b/jakarta/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-jakarta</artifactId>
     <packaging>pom</packaging>
diff --git a/jakarta/sitemesh2-jakarta/pom.xml b/jakarta/sitemesh2-jakarta/pom.xml
index f39962ec3a..ff89ab8ba1 100644
--- a/jakarta/sitemesh2-jakarta/pom.xml
+++ b/jakarta/sitemesh2-jakarta/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-jakarta</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-sitemesh2-jakarta</artifactId>
     <packaging>jar</packaging>
diff --git a/jakarta/velocity-tools-jsp-jakarta/pom.xml b/jakarta/velocity-tools-jsp-jakarta/pom.xml
index 49433f09eb..0c813a6766 100644
--- a/jakarta/velocity-tools-jsp-jakarta/pom.xml
+++ b/jakarta/velocity-tools-jsp-jakarta/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-jakarta</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-velocity-tools-jsp-jakarta</artifactId>
     <packaging>jar</packaging>
diff --git a/jakarta/velocity-tools-view-jakarta/pom.xml b/jakarta/velocity-tools-view-jakarta/pom.xml
index baf81f5876..e2de89954c 100644
--- a/jakarta/velocity-tools-view-jakarta/pom.xml
+++ b/jakarta/velocity-tools-view-jakarta/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-jakarta</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <artifactId>struts2-velocity-tools-view-jakarta</artifactId>
     <packaging>jar</packaging>
diff --git a/plugins/async/pom.xml b/plugins/async/pom.xml
index 0b5efcbc17..17347bdb52 100644
--- a/plugins/async/pom.xml
+++ b/plugins/async/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-async-plugin</artifactId>
diff --git a/plugins/bean-validation/pom.xml b/plugins/bean-validation/pom.xml
index 18fe1d603a..9ab2fabb39 100644
--- a/plugins/bean-validation/pom.xml
+++ b/plugins/bean-validation/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/plugins/cdi/pom.xml b/plugins/cdi/pom.xml
index ce1a87160f..7d2d4c2a33 100644
--- a/plugins/cdi/pom.xml
+++ b/plugins/cdi/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-cdi-plugin</artifactId>
diff --git a/plugins/config-browser/pom.xml b/plugins/config-browser/pom.xml
index ddb27a1a59..7afc5f7674 100644
--- a/plugins/config-browser/pom.xml
+++ b/plugins/config-browser/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-config-browser-plugin</artifactId>
diff --git a/plugins/convention/pom.xml b/plugins/convention/pom.xml
index a316135c59..357e73ece4 100644
--- a/plugins/convention/pom.xml
+++ b/plugins/convention/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-convention-plugin</artifactId>
diff --git a/plugins/jasperreports/pom.xml b/plugins/jasperreports/pom.xml
index 269916ac60..c3785994cd 100644
--- a/plugins/jasperreports/pom.xml
+++ b/plugins/jasperreports/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-jasperreports-plugin</artifactId>
diff --git a/plugins/javatemplates/pom.xml b/plugins/javatemplates/pom.xml
index 17398d1e51..9ffaf6a8a3 100644
--- a/plugins/javatemplates/pom.xml
+++ b/plugins/javatemplates/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-javatemplates-plugin</artifactId>
diff --git a/plugins/jfreechart/pom.xml b/plugins/jfreechart/pom.xml
index 1a863748fe..4932d52a23 100644
--- a/plugins/jfreechart/pom.xml
+++ b/plugins/jfreechart/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-jfreechart-plugin</artifactId>
diff --git a/plugins/json/pom.xml b/plugins/json/pom.xml
index 3d6a038786..4595793391 100644
--- a/plugins/json/pom.xml
+++ b/plugins/json/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-json-plugin</artifactId>
diff --git a/plugins/junit/pom.xml b/plugins/junit/pom.xml
index 82b65f9668..6affa23465 100644
--- a/plugins/junit/pom.xml
+++ b/plugins/junit/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-junit-plugin</artifactId>
diff --git a/plugins/pom.xml b/plugins/pom.xml
index 4815bb1d8c..a84a617c3c 100644
--- a/plugins/pom.xml
+++ b/plugins/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-parent</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-plugins</artifactId>
diff --git a/plugins/rest/pom.xml b/plugins/rest/pom.xml
index 30a0212431..77e7f1af9d 100644
--- a/plugins/rest/pom.xml
+++ b/plugins/rest/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-rest-plugin</artifactId>
diff --git a/plugins/sitemesh/pom.xml b/plugins/sitemesh/pom.xml
index ccb1b7df9e..cde71050b2 100644
--- a/plugins/sitemesh/pom.xml
+++ b/plugins/sitemesh/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-sitemesh-plugin</artifactId>
diff --git a/plugins/spring/pom.xml b/plugins/spring/pom.xml
index 417154b5d6..65af7318b1 100644
--- a/plugins/spring/pom.xml
+++ b/plugins/spring/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-spring-plugin</artifactId>
diff --git a/plugins/testng/pom.xml b/plugins/testng/pom.xml
index 6d8b160ff5..7318100305 100644
--- a/plugins/testng/pom.xml
+++ b/plugins/testng/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-testng-plugin</artifactId>
diff --git a/plugins/tiles/pom.xml b/plugins/tiles/pom.xml
index 971a0185f0..b378614f52 100644
--- a/plugins/tiles/pom.xml
+++ b/plugins/tiles/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-tiles-plugin</artifactId>
diff --git a/plugins/velocity/pom.xml b/plugins/velocity/pom.xml
index 18d413af8b..261c30a0bb 100644
--- a/plugins/velocity/pom.xml
+++ b/plugins/velocity/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-velocity-plugin</artifactId>
diff --git a/plugins/xslt/pom.xml b/plugins/xslt/pom.xml
index 8ce2c9976b..1412315f52 100644
--- a/plugins/xslt/pom.xml
+++ b/plugins/xslt/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.struts</groupId>
         <artifactId>struts2-plugins</artifactId>
-        <version>7.0.0-M8</version>
+        <version>7.0.0-M9-SNAPSHOT</version>
     </parent>
 
     <artifactId>struts2-xslt-plugin</artifactId>
diff --git a/pom.xml b/pom.xml
index 0ae849fe04..6490ad4ea8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
 
     <modelVersion>4.0.0</modelVersion>
     <artifactId>struts2-parent</artifactId>
-    <version>7.0.0-M8</version>
+    <version>7.0.0-M9-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>Struts 2</name>
     <url>https://struts.apache.org/</url>
@@ -51,7 +51,7 @@
         <connection>scm:git:https://gitbox.apache.org/repos/asf/struts.git</connection>
         <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/struts.git</developerConnection>
         <url>https://github.com/apache/struts/</url>
-        <tag>STRUTS_7_0_0_M8</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <issueManagement>
@@ -104,7 +104,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.build.outputTimestamp>2024-07-11T07:43:18Z</project.build.outputTimestamp>
+        <project.build.outputTimestamp>2024-07-11T07:48:24Z</project.build.outputTimestamp>
         <maven.compiler.release>17</maven.compiler.release>
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>