diff --git a/.github/workflows/wpt_epoch.yml b/.github/workflows/wpt_epoch.yml
index bf1a05feb0..a4b3f07121 100644
--- a/.github/workflows/wpt_epoch.yml
+++ b/.github/workflows/wpt_epoch.yml
@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         deno-version: [v1.x, canary]
-        os: [ubuntu-latest-xl]
+        os: [ubuntu-20.04-xl]
 
     steps:
       - name: Clone repository