diff --git a/.github/workflows/github-pages.yml b/.github/workflows/github-pages.yml
index e91adef..7868c3b 100644
--- a/.github/workflows/github-pages.yml
+++ b/.github/workflows/github-pages.yml
@@ -11,7 +11,7 @@ jobs:
   # This workflow contains a single job called "build"
   deploy:
     # The type of runner that the job will run on
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: