diff --git a/build.gradle b/build.gradle
index f41b6277499b5248a082361700e9faf7221630a1..95e1f88185e2a2be65cde5ca0f479b8159a3a530 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,7 +35,7 @@ project(':de.prob.core') {
 		mavenCentral()
 	}
 
-	def parser_version = '2.5.1'
+	def parser_version = '2.5.6'
 
 	dependencies {
 		// Note: After changing/updating dependencies or their versions here,