diff --git a/ci-tools/update-nixpkgs b/ci-tools/update-nixpkgs
index 4e573981a4cb0220a94c00a3ea1021958e48e024..bc35e300a5242f0f99341bc55b8eeb60bfad1ffd 100755
--- a/ci-tools/update-nixpkgs
+++ b/ci-tools/update-nixpkgs
@@ -75,4 +75,4 @@ BODY=$(cat <<EOF
 EOF
     )
 
-curl -X POST --data "${BODY}" --header "Content-Type: application/json" --header "PRIVATE-TOKEN: ${UPDATE_NIXPKGS_PRIVATE_TOKEN}" "${HOST}/api/v4/projects/merge_requests"
+curl -X POST --data "${BODY}" --header "Content-Type: application/json" --header "PRIVATE-TOKEN: ${UPDATE_NIXPKGS_PRIVATE_TOKEN}" "https://${HOST}/api/v4/projects/merge_requests"