diff --git a/gradle/javaproject.gradle b/gradle/javaproject.gradle
index 7f32b01cc179056aa4983bb405703130faba4c89..1ab15323c1aa9c3631ebb7f810adca5d8e852deb 100644
--- a/gradle/javaproject.gradle
+++ b/gradle/javaproject.gradle
@@ -212,7 +212,7 @@ test {
     systemProperty "ant.project.name", project.name
 
     maxHeapSize = "4096m"
-    jvmArgs '-XX:MaxPermSize=256m', '-Duser.timezone=Europe/Zurich'
+    jvmArgs '-XX:MaxPermSize=1024m', '-Duser.timezone=Europe/Zurich'
     
     testLogging.showStandardStreams = true
     ignoreFailures = true