diff --git a/build.gradle b/build.gradle
index f3ce79c93c20a6ec89088ec8e79abcb5f79f759d..1b90fd85fb3580c220f6872eefa08214f9ccf2b9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,7 @@ configurations { // configuration that holds jars to copy into lib
 	releaseJars 
 }
  
-def parser_version = '2.4.22-SNAPSHOT'
+def parser_version = '2.4.28-SNAPSHOT'
 
 dependencies {
 	//compile (group: 'com.microsoft', name: 'tla2tools', version: '1.4.6')