diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f0c735f..ca0e209 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
     - name: Setup PHP 7.1
       uses: shivammathur/setup-php@v2