diff --git a/logback-access/pom.xml b/logback-access/pom.xml
index 3932232a51..d95e681628 100755
--- a/logback-access/pom.xml
+++ b/logback-access/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-parent</artifactId>
-    <version>1.2.12</version>
+    <version>1.2.13-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-access</artifactId>
diff --git a/logback-classic/pom.xml b/logback-classic/pom.xml
index 2f701896f1..e8027ef31d 100755
--- a/logback-classic/pom.xml
+++ b/logback-classic/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-parent</artifactId>
-    <version>1.2.12</version>
+    <version>1.2.13-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-classic</artifactId>
diff --git a/logback-core/pom.xml b/logback-core/pom.xml
index 6f1f573e2a..2a40d2475f 100755
--- a/logback-core/pom.xml
+++ b/logback-core/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-parent</artifactId>
-    <version>1.2.12</version>
+    <version>1.2.13-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-core</artifactId>
diff --git a/logback-examples/pom.xml b/logback-examples/pom.xml
index 973117b211..2d1ad02b05 100755
--- a/logback-examples/pom.xml
+++ b/logback-examples/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-parent</artifactId>
-    <version>1.2.12</version>
+    <version>1.2.13-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-examples</artifactId>
diff --git a/logback-site/pom.xml b/logback-site/pom.xml
index 1c9a24730c..4e1a6fcc25 100755
--- a/logback-site/pom.xml
+++ b/logback-site/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>ch.qos.logback</groupId>
     <artifactId>logback-parent</artifactId>
-    <version>1.2.12</version>
+    <version>1.2.13-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-site</artifactId>
diff --git a/pom.xml b/pom.xml
index 590bb61921..c2f5b5f363 100755
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-parent</artifactId>
-  <version>1.2.12</version>
+  <version>1.2.13-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Logback-Parent</name>
@@ -47,7 +47,7 @@
   </modules>
 
   <properties>
-    <project.build.outputTimestamp>2023-03-23T21:02:00Z</project.build.outputTimestamp>    
+    <project.build.outputTimestamp>2023-03-23T22:06:22Z</project.build.outputTimestamp>    
     <maven.compiler.source>1.6</maven.compiler.source>
     <maven.compiler.target>1.6</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>