diff --git a/.travis.yml b/.travis.yml
index 8593f2f..7ebf65f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
-language:
-  java
+sudo: required
+language: java
 jdk:
-  - oraclejdk13
+  - oraclejdk11
 before_install:
-  - chmod +x gradlew
+  - chmod u+x gradlew
 script:
   - gradle assemble
 before_deploy:
diff --git a/build.gradle b/build.gradle
index 0fc630d..d387616 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ repositories {
 }
 
 javafx {
-    version = "13"
+    version = "11"
     modules = [ 'javafx.controls' ]
 }