diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 676fc13..daedbb0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ${{ fromJSON(vars.RUNNER || '"ubuntu-latest"') }}
     strategy:
       fail-fast: false
       matrix: