diff --git a/.travis.yml b/.travis.yml
index 86370b6..ad355e4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: groovy
-sudo: true
+sudo: false
 jdk:
 - oraclejdk8
 
@@ -26,3 +26,15 @@ env:
 after_success:
 - ./gradlew test jacocoTestReport coveralls -Pcoverage
 
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+  - rm -fr $HOME/.gradle/caches/*/scripts/
+  - rm -fr $HOME/.gradle/caches/*/scripts-remapped/
+  - rm -fr $HOME/.gradle/caches/*/fileHashes/
+  - rm -fr $HOME/.gradle/caches/transforms-1/transforms-1.lock
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+
diff --git a/gradle/test.gradle b/gradle/test.gradle
index 981b089..5d09ed1 100644
--- a/gradle/test.gradle
+++ b/gradle/test.gradle
@@ -37,6 +37,8 @@ test {
 
 task guiTest(type: Test) {
     jvmArgs project.gradle.startParameter.systemPropertiesArgs.entrySet().collect{"-D${it.key}=${it.value}"}
+    jvmArgs '-Xmx1g'
+
     testLogging {
         exceptionFormat = 'full'
     }