diff --git a/Scripts/ci/distribute-testflight.sh b/Scripts/ci/distribute-testflight.sh
index 8ac6271..3d6badc 100755
--- a/Scripts/ci/distribute-testflight.sh
+++ b/Scripts/ci/distribute-testflight.sh
@@ -36,7 +36,7 @@ else
   printf '%s' "$ASC_API_KEY_BASE64" | base64 --decode > "$key_file"
 fi
 
-KEY_FILE="$key_file" python3 -c 'import json, os, pathlib; print(json.dumps({"key_id": os.environ["ASC_API_KEY_ID"], "issuer_id": os.environ["ASC_API_ISSUER_ID"], "key": pathlib.Path(os.environ["KEY_FILE"]).read_text(), "duration": 1200, "in_house": False}))' > "$api_key_json"
+KEY_FILE="$key_file" nix develop .#ci -c python3 -c 'import json, os, pathlib; print(json.dumps({"key_id": os.environ["ASC_API_KEY_ID"], "issuer_id": os.environ["ASC_API_ISSUER_ID"], "key": pathlib.Path(os.environ["KEY_FILE"]).read_text(), "duration": 1200, "in_house": False}))' > "$api_key_json"
 
 args=(
   run pilot