diff --git a/graalvm/pom.xml b/graalvm/pom.xml
index afa6c1f0..db405508 100644
--- a/graalvm/pom.xml
+++ b/graalvm/pom.xml
@@ -5,7 +5,7 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>unsupported</artifactId>
diff --git a/lambda/pom.xml b/lambda/pom.xml
index 1fa7f8d4..9baf0d9a 100755
--- a/lambda/pom.xml
+++ b/lambda/pom.xml
@@ -5,7 +5,7 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>jmurmel</artifactId>
diff --git a/lambdajbm/pom.xml b/lambdajbm/pom.xml
index e6175755..5f09ea2e 100644
--- a/lambdajbm/pom.xml
+++ b/lambdajbm/pom.xml
@@ -5,7 +5,7 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>jmurmelbm</artifactId>
diff --git a/pom.xml b/pom.xml
index f679b250..d417d8ed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 
     <groupId>io.github.jmurmel</groupId>
     <artifactId>jmurmel-all</artifactId>
-    <version>1.5.0-SNAPSHOT</version>
+    <version>1.5.1-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <description>Murmel interpreter/ compiler</description>
diff --git a/samples.murmel-mlib/pom.xml b/samples.murmel-mlib/pom.xml
index 34198055..23d46e04 100644
--- a/samples.murmel-mlib/pom.xml
+++ b/samples.murmel-mlib/pom.xml
@@ -5,11 +5,11 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>samples.murmel-mlib</artifactId>
-    <version>1.5.0-SNAPSHOT</version>
+    <version>1.5.1-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <properties>
diff --git a/samples.murmel/pom.xml b/samples.murmel/pom.xml
index 18a9d07b..13eaba82 100644
--- a/samples.murmel/pom.xml
+++ b/samples.murmel/pom.xml
@@ -5,11 +5,11 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>samples.murmel</artifactId>
-    <version>1.5.0-SNAPSHOT</version>
+    <version>1.5.1-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <properties>
diff --git a/scripts/pom.xml b/scripts/pom.xml
index aa208802..6db30d58 100644
--- a/scripts/pom.xml
+++ b/scripts/pom.xml
@@ -5,11 +5,11 @@
         <groupId>io.github.jmurmel</groupId>
         <artifactId>jmurmel-all</artifactId>
         <relativePath>../pom.xml</relativePath>
-        <version>1.5.0-SNAPSHOT</version>
+        <version>1.5.1-SNAPSHOT</version>
     </parent>
 
     <artifactId>scripts</artifactId>
-    <version>1.5.0-SNAPSHOT</version>
+    <version>1.5.1-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <properties>