diff --git a/pom.xml b/pom.xml
index 2cae9e4e509cf5c551397601a766200fb447e247..8a9a068c88ba2ccf690199ca286ff305fe6404be 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
         <groupId>org.lcsim</groupId>
         <artifactId>lcsim-parent</artifactId>
         <relativePath>./parent/pom.xml</relativePath>
-        <version>3.9-SNAPSHOT</version>
+        <version>4.0-SNAPSHOT</version>
     </parent>
 
     <scm>