diff --git a/.travis.yml b/.travis.yml
index a0a8f64a..1d6306be 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ php:
 
 env:
   global:
-    - CORE_BRANCH=master
+    - CORE_BRANCH=stable13
     - APP_NAME=files_accesscontrol
   matrix:
     - DB=sqlite