diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index f428df7..038cb2d 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -16,6 +16,7 @@ jobs:
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
+          ref: master
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -82,16 +83,34 @@ jobs:
             return 1
           }
           
+          # 检查 YAML 文件是否有有效内容（排除 payload: 和空行/注释行）
+          has_yaml_content() {
+            local file=$1
+            local content_lines=$(sed '/^payload:$/d; /^#/d; /^$/d' "$file" | wc -l)
+            [ "$content_lines" -gt 0 ]
+          }
+          
+          # 检查 LIST 文件是否有有效内容（排除注释和空行）
+          has_list_content() {
+            local file=$1
+            local content_lines=$(sed '/^#/d; /^$/d' "$file" | wc -l)
+            [ "$content_lines" -gt 0 ]
+          }
+          
           # 处理所有分离文件（包括生成的和已存在的）
           for file in Clash/Providers/*_domain.yaml Clash/Providers/*_ip.yaml Clash/Providers/Ruleset/*_domain.yaml Clash/Providers/Ruleset/*_ip.yaml; do
             if [ -f "$file" ]; then
               filename=$(basename "$file")
-              if [[ "$filename" == *"_domain.yaml" ]]; then
-                base=$(basename "$file" _domain.yaml)
-                convert_file "domain" "yaml" "$file" "Clash/mrs/${base}_domain.mrs"
-              elif [[ "$filename" == *"_ip.yaml" ]]; then
-                base=$(basename "$file" _ip.yaml)
-                convert_file "ipcidr" "yaml" "$file" "Clash/mrs/${base}_ip.mrs"
+              if has_yaml_content "$file"; then
+                if [[ "$filename" == *"_domain.yaml" ]]; then
+                  base=$(basename "$file" _domain.yaml)
+                  convert_file "domain" "yaml" "$file" "Clash/mrs/${base}_domain.mrs"
+                elif [[ "$filename" == *"_ip.yaml" ]]; then
+                  base=$(basename "$file" _ip.yaml)
+                  convert_file "ipcidr" "yaml" "$file" "Clash/mrs/${base}_ip.mrs"
+                fi
+              else
+                echo "Skipping empty or invalid file: $file"
               fi
             fi
           done
@@ -99,12 +118,16 @@ jobs:
           for file in Clash/Ruleset/*_domain.list Clash/Ruleset/*_ip.list; do
             if [ -f "$file" ]; then
               filename=$(basename "$file")
-              if [[ "$filename" == *"_domain.list" ]]; then
-                base=$(basename "$file" _domain.list)
-                convert_file "domain" "text" "$file" "Clash/mrs/${base}_domain.mrs"
-              elif [[ "$filename" == *"_ip.list" ]]; then
-                base=$(basename "$file" _ip.list)
-                convert_file "ipcidr" "text" "$file" "Clash/mrs/${base}_ip.mrs"
+              if has_list_content "$file"; then
+                if [[ "$filename" == *"_domain.list" ]]; then
+                  base=$(basename "$file" _domain.list)
+                  convert_file "domain" "text" "$file" "Clash/mrs/${base}_domain.mrs"
+                elif [[ "$filename" == *"_ip.list" ]]; then
+                  base=$(basename "$file" _ip.list)
+                  convert_file "ipcidr" "text" "$file" "Clash/mrs/${base}_ip.mrs"
+                fi
+              else
+                echo "Skipping empty or invalid file: $file"
               fi
             fi
           done