diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 7d396248..7c55f8e6 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -19,7 +19,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04]
+        os: [ubuntu-20.04]
         python-version: ["3.6"]
 
     steps: