diff --git a/.github/workflows/weekly-pr-summary.yml b/.github/workflows/weekly-pr-summary.yml
index 45fd5985..cb42033d 100644
--- a/.github/workflows/weekly-pr-summary.yml
+++ b/.github/workflows/weekly-pr-summary.yml
@@ -1,11 +1,9 @@
 name: Weekly PR Summary
 
 on:
-  pull_request_target:
-    types: [opened]
   schedule:
     # 매주 금요일 13:00 UTC (22:00 KST)
-    - cron: '0 13 * * 5'
+    - cron: "0 13 * * 5"
   workflow_dispatch:
 
 jobs:
@@ -30,12 +28,14 @@ jobs:
             --repo "$REPO" \
             --state merged \
             --limit 100 \
-            --json number,title,author,labels,mergedAt,url \
-            --jq --arg since "$SINCE_DATE" '
-              map(select(.mergedAt >= $since)) |
-              sort_by(.mergedAt) |
-              reverse
-            ' > prs.json
+            --json number,title,author,labels,mergedAt,url > all_prs.json
+
+          # 날짜 필터링
+          jq --arg since "$SINCE_DATE" '
+            map(select(.mergedAt >= $since)) |
+            sort_by(.mergedAt) |
+            reverse
+          ' all_prs.json > prs.json
 
           # PR 개수 확인
           PR_COUNT=$(jq 'length' prs.json)
@@ -62,7 +62,7 @@ jobs:
                   ""
                 end
               ) +
-              "\n  🔗 " + .url
+              "\n  🔗 <" + .url + ">"
             ) | join("\n\n")
           ' prs.json)
 
@@ -71,15 +71,15 @@ jobs:
             PR_LIST="이번 주에 머지된 PR이 없습니다."
           fi
 
-          # 메시지 생성
-          cat > message.txt <<EOF
-**📊 이번 주 작업 요약**
-
-**기간:** $START_DATE ~ $END_DATE
-**총 머지된 PR:** $PR_COUNT개
-
-$PR_LIST
-EOF
+          # 메시지 생성 (환경 변수로 저장)
+          echo "MESSAGE<<EOFMSG" >> $GITHUB_ENV
+          echo "**📊 이번 주 작업 요약**" >> $GITHUB_ENV
+          echo "" >> $GITHUB_ENV
+          echo "**기간:** $START_DATE ~ $END_DATE" >> $GITHUB_ENV
+          echo "**총 머지된 PR:** $PR_COUNT개" >> $GITHUB_ENV
+          echo "" >> $GITHUB_ENV
+          echo "$PR_LIST" >> $GITHUB_ENV
+          echo "EOFMSG" >> $GITHUB_ENV
 
           echo "Generated summary message"
 
@@ -87,9 +87,6 @@ EOF
         env:
           DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}
         run: |
-          # 메시지 읽기
-          MESSAGE=$(cat message.txt)
-
           # Discord로 전송
           jq -n \
             --arg username "주간 PR 요약봇" \
diff --git a/test-trigger.txt b/test-trigger.txt
new file mode 100644
index 00000000..5c33b151
--- /dev/null
+++ b/test-trigger.txt
@@ -0,0 +1 @@
+trigger
diff --git a/test-weekly-trigger.md b/test-weekly-trigger.md
new file mode 100644
index 00000000..c50fd849
--- /dev/null
+++ b/test-weekly-trigger.md
@@ -0,0 +1 @@
+# Weekly summary workflow test