diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 4a96375..3319f39 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -3,7 +3,7 @@ name: CI Checks
 jobs:
   check:
     name: Check and Lint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
       - uses: actions-rs/toolchain@v1