diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c85de077..9aa26b90 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
 
         strategy:
             matrix:
-                os: [ubuntu-latest]
+                os: [ubuntu-20.04]
                 node: [14.17.0]
 
         steps: