diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7b4a141..1bb3f27 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,8 +20,9 @@ jobs:
       - name: Validate commit message
         run: |
           # Get commit message(s) to validate
+          # Use --no-merges to exclude merge commits (auto-generated by GitHub)
           if [ "${{ github.event_name }}" = "pull_request" ]; then
-            COMMITS=$(git log --format=%s origin/${{ github.base_ref }}..HEAD)
+            COMMITS=$(git log --no-merges --format=%s origin/${{ github.base_ref }}..HEAD)
           else
             COMMITS=$(git log -1 --format=%s)
           fi
diff --git a/package.json b/package.json
index bcaec3d..05351d9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "markpdfdown",
-  "version": "0.1.3-tfive",
+  "version": "0.1.5-tone",
   "description": "A high-quality PDF to Markdown tool based on large language model visual recognition.",
   "author": "MarkPDFdown",
   "main": "dist/main/index.js",
@@ -103,11 +103,13 @@
       "prettier --write"
     ]
   },
+  "optionalDependencies": {
+    "electron": "^35.0.2"
+  },
   "dependencies": {
     "@ant-design/icons": "^5.6.1",
     "@prisma/client": "^6.5.0",
     "prisma": "^6.5.0",
-    "electron": "^35.0.2",
     "@types/sharp": "^0.31.1",
     "antd": "^5.24.4",
     "electron-is-dev": "^3.0.1",