diff --git a/build.properties b/build.properties
index e94e4332..abcc23ea 100644
--- a/build.properties
+++ b/build.properties
@@ -7,7 +7,7 @@ integration.repo.dir=${basedir}/../integration-repo
 source.version=1.5
 javadoc.exclude.package.names=org/springframework/webflow/samples/**
 javadoc.max.memory=256M
-test.vm.args=-XX:MaxPermSize=128M
+test.vm.args=-Xmx1024M -XX:MaxPermSize=512M -XX:+HeapDumpOnOutOfMemoryError
 ivy.settings.file=${basedir}/../build-spring-webflow/ivysettings.xml
 
 # For when releasing