diff --git a/logback-access/pom.xml b/logback-access/pom.xml
index cb23bc5032..05a60fc294 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>1.3.9-SNAPSHOT</version>
+    <version>1.3.9</version>
   </parent>
 
   <artifactId>logback-access</artifactId>
diff --git a/logback-classic-blackbox/pom.xml b/logback-classic-blackbox/pom.xml
index d5456e3a55..0b53fea745 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>1.3.9-SNAPSHOT</version>
+        <version>1.3.9</version>
     </parent>
 
     <artifactId>logback-classic-blackbox</artifactId>
diff --git a/logback-classic/pom.xml b/logback-classic/pom.xml
index 24427bede0..f4e797c842 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>1.3.9-SNAPSHOT</version>
+    <version>1.3.9</version>
   </parent>
 
   <artifactId>logback-classic</artifactId>
diff --git a/logback-core-blackbox/pom.xml b/logback-core-blackbox/pom.xml
index b9f876e273..e8d43adc4c 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>1.3.9-SNAPSHOT</version>
+        <version>1.3.9</version>
     </parent>
 
     <artifactId>logback-core-blackbox</artifactId>
diff --git a/logback-core/pom.xml b/logback-core/pom.xml
index 8e6c748871..9841207643 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>1.3.9-SNAPSHOT</version>
+    <version>1.3.9</version>
   </parent>
 
   <artifactId>logback-core</artifactId>
diff --git a/logback-examples/pom.xml b/logback-examples/pom.xml
index 603371182d..2ff06f63b0 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>1.3.9-SNAPSHOT</version>
+    <version>1.3.9</version>
   </parent>
 
   <artifactId>logback-examples</artifactId>
diff --git a/pom.xml b/pom.xml
index fbb2ef94cf..488008b69f 100755
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-parent</artifactId>
-  <version>1.3.9-SNAPSHOT</version>
+  <version>1.3.9</version>
   <packaging>pom</packaging>
 
   <name>Logback-Parent</name>
@@ -49,7 +49,7 @@
 
   <properties>
     <!-- yyyy-MM-dd'T'HH:mm:ss'Z' -->
-    <project.build.outputTimestamp>2023-06-13T08:33:12Z</project.build.outputTimestamp>    
+    <project.build.outputTimestamp>2023-08-04T20:14:00Z</project.build.outputTimestamp>    
     <jdk.version>8</jdk.version>
     <maven.compiler.source>${jdk.version}</maven.compiler.source>
     <maven.compiler.target>${jdk.version}</maven.compiler.target>