diff --git a/logback-classic-blackbox/pom.xml b/logback-classic-blackbox/pom.xml
index 019fd6ea4a..d4c9c0378a 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>1.5.5-SNAPSHOT</version>
+        <version>1.5.5</version>
     </parent>
 
     <artifactId>logback-classic-blackbox</artifactId>
diff --git a/logback-classic/pom.xml b/logback-classic/pom.xml
index 0de1eb8263..d24fd6d4da 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>1.5.5-SNAPSHOT</version>
+    <version>1.5.5</version>
   </parent>
 
   <artifactId>logback-classic</artifactId>
diff --git a/logback-core-blackbox/pom.xml b/logback-core-blackbox/pom.xml
index b0b76d2027..545a5179e0 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>1.5.5-SNAPSHOT</version>
+        <version>1.5.5</version>
     </parent>
 
     <artifactId>logback-core-blackbox</artifactId>
diff --git a/logback-core/pom.xml b/logback-core/pom.xml
index 99728ba6bf..4f2bcdad92 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>1.5.5-SNAPSHOT</version>
+        <version>1.5.5</version>
     </parent>
 
     <artifactId>logback-core</artifactId>
diff --git a/logback-examples/pom.xml b/logback-examples/pom.xml
index 695b1ebab4..d4a4451ec4 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>1.5.5-SNAPSHOT</version>
+    <version>1.5.5</version>
   </parent>
 
   <artifactId>logback-examples</artifactId>
diff --git a/pom.xml b/pom.xml
index 2e9aece22c..2a98ace9a6 100755
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 
   <groupId>ch.qos.logback</groupId>
   <artifactId>logback-parent</artifactId>
-  <version>1.5.5-SNAPSHOT</version>
+  <version>1.5.5</version>
   <packaging>pom</packaging>
 
   <name>Logback-Parent</name>
@@ -48,7 +48,7 @@
 
   <properties>
     <!-- yyyy-MM-dd'T'HH:mm:ss'Z' -->
-    <project.build.outputTimestamp>2024-04-09T08:54:44Z</project.build.outputTimestamp>
+    <project.build.outputTimestamp>2024-04-12T16:26:00Z</project.build.outputTimestamp>
 
     <!-- minimal JDK version at runtime -->
     <jdk.version>11</jdk.version>