diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index 465846d9f..9c7968113 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -45,7 +45,7 @@ jobs:
 
       - name: Generate DTS
         shell: bash
-        run: npm run generate:dts
+        run: npx tsx workflow/generate-dts.ts
 
       - name: Run unit tests
         id: unit-tests
@@ -54,6 +54,8 @@ jobs:
       - name: Check DTS API compatibility
         if: github.event_name == 'pull_request'
         shell: bash
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
         run: |
           BASE_REF="origin/${{ github.base_ref }}"
           SNAP_FILE="tests/__snapshots__/dts-snapshot.test.ts.snap"
@@ -66,7 +68,6 @@ jobs:
 
           # Check if snapshot file changed compared to base branch
           if git diff --name-only "$BASE_REF"...HEAD | grep -q "$SNAP_FILE"; then
-            PR_TITLE="${{ github.event.pull_request.title }}"
             if [[ "$PR_TITLE" != *"[break]"* ]]; then
               echo "::error::DTS API breaking change detected! The snapshot file changed but the PR title does not contain [break]."
               echo "::error::If this change is intentional, add [break] to your PR title."
diff --git a/package.json b/package.json
index 5165f9f67..e7fbc6942 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
         "check:e2e-coverage": "tsx e2e/scripts/check-coverage.ts",
         "check:e2e-coverage:report": "tsx e2e/scripts/check-coverage.ts --save",
         "generate:mcp-types": "node --max-old-space-size=4096 node_modules/tsx/dist/cli.mjs e2e/scripts/generate-mcp-types.ts",
-        "generate:dts": "tsx workflow/generate-dts.ts & npx jest tests/dts-snapshot.test.ts -u",
+        "generate:dts": "tsx workflow/generate-dts.ts && npx jest tests/dts-snapshot.test.ts -u",
         "install:engine": "cd ./packages/engine && npm i",
         "compiler": "FORCE_UPDATE=true npm i",
         "compiler:engine": "node --max-old-space-size=8192 workflow/compiler-engine.js --force",