diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 15392cde0..6b917e5a0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ env:
 
 jobs:
   main:
-    runs-on: ubuntu-16.04
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         python-version: [3.8]