diff --git a/circle.yml b/circle.yml
index ce918eb1ad1..6a0095b4215 100644
--- a/circle.yml
+++ b/circle.yml
@@ -7,6 +7,7 @@ jobs:
     branches:
       ignore:
         - mono-refactor
+        - core
     steps:
       - checkout
       - restore_cache: