diff --git a/.travis.yml b/.travis.yml
index 879c2bd..ca898d0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,4 +14,4 @@ cache:
     - $HOME/.gradle/wrapper/
 
 jdk:
-  - oraclejdk13
\ No newline at end of file
+  - oraclejdk9
\ No newline at end of file