diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index edfcede..3ddcd67 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -20,7 +20,7 @@ jobs:
       fail-fast: true
 
       matrix:
-        os: [ubuntu-18.04, ubuntu-latest]
+        os: [ubuntu-20.04, ubuntu-latest]
     steps:
       - uses: actions/checkout@v3
         with: