diff --git a/tag_generator.sh b/tag_generator.sh
index acbca910..141408f9 100755
--- a/tag_generator.sh
+++ b/tag_generator.sh
@@ -69,17 +69,17 @@ else
   echo "compare_json:$compare_json\n"
   new_patch=$patch
   new_minor=$minor
-  declare -A seen_commits  # 用于去重
+  seen_commits=""  # 用于去重
   while IFS= read -r commit_json; do
     commit_id=$(echo "$commit_json" | jq -r '.id')
     commit_title=$(echo "$commit_json" | jq -r '.title')
     commit_message=$(echo "$commit_json" | jq -r '.message')
 
-    # commit id 去重
-    if [[ -n "${seen_commits[$commit_id]}" ]]; then
+    # commit id 去重（兼容所有 shell）
+    if echo "$seen_commits" | grep -q "$commit_id"; then
       continue
     fi
-    seen_commits[$commit_id]=1
+    seen_commits="$seen_commits $commit_id"
 
     # 跳过 Merge 和 Revert 提交
     if [[ "$commit_title" =~ ^Merge ]] || [[ "$commit_title" =~ ^Revert ]]; then