diff --git a/.github/workflows/compile_docs.yml b/.github/workflows/compile_docs.yml
index cd0bfb9..81f7390 100644
--- a/.github/workflows/compile_docs.yml
+++ b/.github/workflows/compile_docs.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   compile:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2