diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 0eb36c9..5d8d102 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -5,7 +5,7 @@ on: [push, pull_request]
 jobs:
   tests:
     name: Run Tests
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         otp: ['20.3']