diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 826a0056cb..1b37d0cd50 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -50,6 +50,7 @@ jobs:
         with:
           path: C:\my-stunnel
           key: ${{ runner.os }}-stunnel-${{ env.STUNNEL_VERSION }}-amd64
+          lookup-only: true
 
       - name: 'install test prereqs (stunnel)'
         if: ${{ steps.cache-stunnel.outputs.cache-hit != 'true' }}