diff --git a/.github/workflows/cibuild.yml b/.github/workflows/cibuild.yml
index 2d43fda1..7da6060f 100644
--- a/.github/workflows/cibuild.yml
+++ b/.github/workflows/cibuild.yml
@@ -11,6 +11,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.repository == 'mbroz/cryptsetup'
     strategy:
       fail-fast: false
       matrix: