diff --git a/ci-tools/update-nixpkgs b/ci-tools/update-nixpkgs
index bc35e300a5242f0f99341bc55b8eeb60bfad1ffd..3a446af6fbf65ea7ee93aa6870088ce4a2c23f28 100755
--- a/ci-tools/update-nixpkgs
+++ b/ci-tools/update-nixpkgs
@@ -61,7 +61,7 @@ fi
 # diff=$(nix --extra-experimental-features nix-command store diff-closures ./result-before/ ./result-after/)
 
 git commit -am "bump nixpkgs version"
-git push origin "${TARGET_BRANCH}:${TARGET_BRANCH}"
+git push --force origin "${TARGET_BRANCH}:${TARGET_BRANCH}"
 
 BODY=$(cat <<EOF
 {