diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 6ce6371..2a5c63a 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -7,7 +7,7 @@ on:
 jobs:
   build:
     name: Build website
-    runs-on: ubuntu-latest
+    runs-on: Ubuntu-20.04
     steps:
       - name: Checkout
         uses: actions/checkout@v2