diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4e893f..4236686 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-20.04]
         elixir_version: [1.12.3, 1.13.3, 1.14.1]
         otp_version: [24, 25]
         exclude: