diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 138c3bd..ced46fd 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -6,6 +6,7 @@ on:
 
 jobs:
   multiple-registries:
+    if: github.repository_owner == 'exercism' # Stops this job from running on forks.
     runs-on: ubuntu-latest
 
     env: