diff --git a/.github/workflows/test-shard-template.yml b/.github/workflows/test-shard-template.yml
index 185764c86a8..9fc41d1b965 100644
--- a/.github/workflows/test-shard-template.yml
+++ b/.github/workflows/test-shard-template.yml
@@ -29,4 +29,4 @@ jobs:
       - name: Install Node.js dependencies
         run: npm ci
       - name: Run tests
-        run: npx vitest --project ${{ inputs.project }} --shard=${{ inputs.shard }}/${{ inputs.totalShards }} ${{ !runner.debug && '--silent' || '' }}
+        run: npx vitest --project ${{ inputs.project }} --no-isolate --shard=${{ inputs.shard }}/${{ inputs.totalShards }} ${{ !runner.debug && '--silent' || '' }}