diff --git a/.github/workflows/comment-perf.yaml b/.github/workflows/comment-perf.yaml
index a6ad2e02..075d3611 100644
--- a/.github/workflows/comment-perf.yaml
+++ b/.github/workflows/comment-perf.yaml
@@ -20,14 +20,18 @@ jobs:
       - name: Download comment
         uses: actions/download-artifact@v4
         with:
-          name: benchmark-report
-          path: benchmark-report.txt
+          name: benchmark-result
+          path: benchmark-result
           github-token: ${{ secrets.ROCKSBOT_CHISEL_PR_COMMENTER }}
           run-id: ${{ github.event.workflow_run.id }}
 
+      - name: Read PR number
+        id: read-pr-number
+        run: echo "number=$(cat benchmark-result/pr_number)" >> $GITHUB_OUTPUT
+
       - name: Post message to PR
-        uses: mshick/add-pr-comment@dd126dd8c253650d181ad9538d8b4fa218fc31e8
+        uses: mshick/add-pr-comment@dd126dd8c253650d181ad9538d8b4fa218fc31e8 # v2
         with:
-          message-path: benchmark-report.txt
-          issue: ${{ github.event.workflow_run.pull_requests[0].number }}
+          message-path: benchmark-result/report.md
+          issue: ${{ steps.read-pr-number.outputs.number }}
           repo-token: ${{ secrets.ROCKSBOT_CHISEL_PR_COMMENTER }}
diff --git a/.github/workflows/performance.yaml b/.github/workflows/performance.yaml
index 1d9c7063..a79bf1b6 100644
--- a/.github/workflows/performance.yaml
+++ b/.github/workflows/performance.yaml
@@ -65,14 +65,17 @@ jobs:
       - name: Run benchmark
         id: benchmark
         run: |
-          msg_file="$(mktemp)"
-          echo "msg_file=$msg_file" >> $GITHUB_OUTPUT
           chmod +x base head
-          hyperfine --export-markdown "$msg_file" "./base info --release ./chisel-releases 'python3.12_core'" -n "BASE" "./head info --release ./chisel-releases 'python3.12_core'" -n "HEAD"
+          hyperfine --export-markdown report.md "./base info --release ./chisel-releases 'python3.12_core'" -n "BASE" "./head info --release ./chisel-releases 'python3.12_core'" -n "HEAD"
+
+      - name: Save PR number
+        run: echo "${{ github.event.pull_request.number }}" > pr_number
 
       - name: Upload result
         uses: actions/upload-artifact@v4
         with:
-          name: benchmark-report
-          path: ${{ steps.benchmark.outputs.msg_file }}
+          name: benchmark-result
+          path: |
+            report.md
+            pr_number
           retention-days: 1