diff --git a/.drone.yml b/.drone.yml
index 7817b1755..17215f715 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -8,7 +8,7 @@ pipeline:
     image: nextcloudci/php7.0:php7.0-17
     environment:
       - APP_NAME=deck
-      - CORE_BRANCH=stable14
+      - CORE_BRANCH=stable15
       - DB=sqlite
     commands:
       # Pre-setup steps