diff --git a/ci-tools/update-nixpkgs b/ci-tools/update-nixpkgs
index 97573ad24dddecac67f324489651c93c27d21df4..22f2dc1c2b85eec9ef52f2d27ea838f0ce9bdf74 100755
--- a/ci-tools/update-nixpkgs
+++ b/ci-tools/update-nixpkgs
@@ -65,16 +65,14 @@ git push --force origin "${TARGET_BRANCH}:${TARGET_BRANCH}"
 
 BODY=$(python3 -c '
 import os, sys, json
-print("```")
 print(json.dumps({
     "id": os.environ["CI_PROJECT_ID"],
     "source_branch": os.environ["CI_COMMIT_REF_NAME"],
     "target_branch": os.environ["TARGET_BRANCH"],
     "remove_source_branch": True,
     "title": "bump nixpkgs version",
-    "description": sys.argv[1],
+    "description": f"```\n{sys.argv[1]}\n```",
 }))
-print("```")
 ' "${DIFF}")
 
 curl --verbose -X POST --data "${BODY}" --header "Content-Type: application/json" --header "PRIVATE-TOKEN: ${UPDATE_NIXPKGS_PRIVATE_TOKEN}" "https://${HOST}/api/v4/projects/${CI_PROJECT_ID}/merge_requests"