diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f68fa94b4f08aba6cb16dd5593bf72b1ddf26bde..1cf8596705a9092f06c9f5667c013083b747e700 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -22,6 +22,8 @@ compile-mandelbrot:
         - a.out
   tags:
     - macosx
+  only:
+    - master
 
 # Stage: compile
 submit-mandelbrot: