diff --git a/.github/actions/setup/directories/action.yml b/.github/actions/setup/directories/action.yml
index 00a3a4cf2a..e063fe4e21 100644
--- a/.github/actions/setup/directories/action.yml
+++ b/.github/actions/setup/directories/action.yml
@@ -96,7 +96,7 @@ runs:
     - uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
       with:
         path: ${{ inputs.srcdir }}/.downloaded-cache
-        key: downloaded-cache
+        key: ${{ runner.os }}-downloaded-cache
 
     - if: steps.which.outputs.autoreconf
       shell: bash