diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca4fef2b78..885d87fcb1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -188,6 +188,7 @@ jobs:
     runs-on: blacksmith-4vcpu-windows-2025
     env:
       NODE_OPTIONS: --max-old-space-size=4096
+      CLAWDBOT_TEST_WORKERS: 1
     defaults:
       run:
         shell: bash