diff --git a/logback-access/pom.xml b/logback-access/pom.xml
index 8a3711184e..7a267f87cb 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>1.3.14</version>
+    <version>1.3.15-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-access</artifactId>
diff --git a/logback-classic-blackbox/pom.xml b/logback-classic-blackbox/pom.xml
index c5df98f356..458d85574c 100644
--- a/logback-classic-blackbox/pom.xml
+++ b/logback-classic-blackbox/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-parent</artifactId>
-        <version>1.3.14</version>
+        <version>1.3.15-SNAPSHOT</version>
     </parent>
 
     <artifactId>logback-classic-blackbox</artifactId>
diff --git a/logback-classic/pom.xml b/logback-classic/pom.xml
index 6ed7d4ae20..ca34732c5a 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>1.3.14</version>
+    <version>1.3.15-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-classic</artifactId>
diff --git a/logback-core-blackbox/pom.xml b/logback-core-blackbox/pom.xml
index 92ea54fba4..e44422b4a3 100644
--- a/logback-core-blackbox/pom.xml
+++ b/logback-core-blackbox/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-parent</artifactId>
-        <version>1.3.14</version>
+        <version>1.3.15-SNAPSHOT</version>
     </parent>
 
     <artifactId>logback-core-blackbox</artifactId>
diff --git a/logback-core/pom.xml b/logback-core/pom.xml
index 19d6e07ae7..6caf927c79 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>1.3.14</version>
+    <version>1.3.15-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-core</artifactId>
diff --git a/logback-examples/pom.xml b/logback-examples/pom.xml
index 2ae84648d9..616ba01c84 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>1.3.14</version>
+    <version>1.3.15-SNAPSHOT</version>
   </parent>
 
   <artifactId>logback-examples</artifactId>
diff --git a/pom.xml b/pom.xml
index 40967316c6..c073049841 100755
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-parent</artifactId>
-  <version>1.3.14</version>
+  <version>1.3.15-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Logback-Parent</name>
@@ -49,7 +49,7 @@
 
   <properties>
     <!-- yyyy-MM-dd'T'HH:mm:ss'Z' -->
-    <project.build.outputTimestamp>2023-12-01T12:00:00Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2023-12-04T15:51:26Z</project.build.outputTimestamp>
 
     <!-- minimal JDK version at runtime -->
     <jdk.version>8</jdk.version>