diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 06dffbe..eddd909 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
             otp: "21.3.8.14"
           - elixir: "1.7.4"
             otp: "20.3.8.26"
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: erlef/setup-beam@v1
@@ -28,7 +28,7 @@ jobs:
         run: mix test
   mix_format:
     name: mix format (Elixir 1.9.4 OTP 22.3)
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: erlef/setup-beam@v1