diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 07ce386..24d4c00 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -102,7 +102,7 @@ jobs:
           DMG_PATH=$(ls src-tauri/target/universal-apple-darwin/release/bundle/dmg/*.dmg | head -1)
           rm -f "${DMG_PATH}.sig"
           # 用 python 将私钥写入文件，避免 shell heredoc 缩进问题
-          python3 -c "import os; open('/tmp/private.key','w').write(os.environ['TAURI_SIGNING_PRIVATE_KEY'])"
+          python3 -c "import os; open('/tmp/private.key','w').write(os.environ['TAURI_SIGNING_PRIVATE_KEY'].strip())"
           npx tauri signer sign -f /tmp/private.key -p "$TAURI_SIGNING_PRIVATE_KEY_PASSWORD" "$DMG_PATH"
           rm -f /tmp/private.key
         env: