diff --git a/.travis.yml b/.travis.yml
index 62a8a1169..221c3fc34 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ cache:
 
 env:
   global:
-    - CORE_BRANCH=master
+    - CORE_BRANCH=stable18
     - APP_NAME=notifications
   matrix:
     - DB=sqlite