diff --git a/.github/workflows/pre-check-plugin.yaml b/.github/workflows/pre-check-plugin.yaml
index e50ae8c..2662a0d 100644
--- a/.github/workflows/pre-check-plugin.yaml
+++ b/.github/workflows/pre-check-plugin.yaml
@@ -74,12 +74,37 @@ jobs:
 
       - name: Check Plugin Manifest
         run: |
-          # manifest.yaml author must be langgenius
+          # manifest.yaml author must not be langgenius
           if yq '.author' ${{ env.PLUGIN_PATH }}/manifest.yaml | grep -q "langgenius"; then
             echo "!!! Plugin manifest.yaml author must not be 'langgenius'"
             exit 1
           fi
 
+          # author must equal to the pr author (lowercase)
+          if [ "$(yq '.author' ${{ env.PLUGIN_PATH }}/manifest.yaml)" != "$(gh pr view -R ${{ env.REPO_NAME }} ${{ github.event.pull_request.number }} --json author --jq .author.login | tr '[:upper:]' '[:lower:]')" ]; then
+            echo "!!! Plugin manifest.yaml author should be lowercase and must be the same as the PR author"
+            exit 1
+          fi
+
+      - name: Check If Version Exists
+        run: |
+          # get version, author, name
+          VERSION=$(yq '.version' ${{ env.PLUGIN_PATH }}/manifest.yaml)
+          AUTHOR=$(yq '.author' ${{ env.PLUGIN_PATH }}/manifest.yaml)
+          NAME=$(yq '.name' ${{ env.PLUGIN_PATH }}/manifest.yaml)
+          echo "Checking plugin version: $VERSION"
+
+          # Check if the version already exists
+          RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}" "${{ secrets.MARKETPLACE_BASE_URL }}/api/v1/plugins/$AUTHOR/$NAME/$VERSION")
+          
+          if [ "$RESPONSE_CODE" = "200" ]; then
+            RESPONSE=$(curl -s "${{ secrets.MARKETPLACE_BASE_URL }}/api/v1/plugins/$AUTHOR/$NAME/$VERSION")
+            if [ "$(echo "$RESPONSE" | jq -r '.code')" = "0" ]; then
+              echo "!!! Plugin version $VERSION already exists, please update the version number in manifest.yaml"
+              exit 1
+            fi
+          fi
+
       - name: Check Plugin Deps
         run: |
           if [ -f ${{ env.PLUGIN_PATH }}/requirements.txt ]; then
diff --git a/.github/workflows/upload-merged-plugin.yaml b/.github/workflows/upload-merged-plugin.yaml
index a92caad..57b18fa 100644
--- a/.github/workflows/upload-merged-plugin.yaml
+++ b/.github/workflows/upload-merged-plugin.yaml
@@ -65,4 +65,4 @@ jobs:
 
       - name: Upload Plugin
         run: |
-          python3 .scripts/uploader/upload-package.py -p ${{ env.PLUGIN_PATH }} -t ${{ secrets.MARKETPLACE_TOKEN }} --plugin-daemon-path .scripts/dify-plugin-linux-amd64 -u ${{ secrets.MARKETPLACE_BASE_URL }} -f
+          python3 .scripts/uploader/upload-package.py -p ${{ env.PLUGIN_PATH }} -t ${{ secrets.MARKETPLACE_TOKEN }} --plugin-daemon-path .scripts/dify-plugin-linux-amd64 -u ${{ secrets.MARKETPLACE_BASE_URL }}