diff --git a/build.gradle b/build.gradle
index 863c445a..fea15390 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,7 +10,7 @@ apply from: "${buildscript.sourceFile.parentFile}/scripts/javapreprocessor.gradl
 group = 'de.inetsoftware'
 
 def LIB_GRADLE_VERSION = System.getenv('LIB_GRADLE_VERSION') ?: '8.1.0'     // Gradle version for the wrapper
-def buildVersion    = '19'                                                  // build version
+def buildVersion    = '20'                                                  // build version
 def baseVersion     = '8.0'                                                 // Base Version to build, depends on gradle version.
 
 wrapper.gradleVersion = LIB_GRADLE_VERSION