diff --git a/.travis.yml b/.travis.yml
index 42b662663..a5b433770 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ php:
     - 7.2
 env:
     - CORE_BRANCH=master DB=mysql
+    - CORE_BRANCH=stable13 DB=mysql
     - CORE_BRANCH=stable12 DB=mysql 
 
 matrix: