diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 432fed99..5e9ed94a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,6 +36,7 @@ jobs:
             builder: windows-2019
     name: '${{ matrix.target.os }}-${{ matrix.target.cpu }}-${{ matrix.branch }}'
     runs-on: ${{ matrix.builder }}
+    timeout-minutes: 40
     steps:
       - name: Checkout nim-codex
         uses: actions/checkout@v2