diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a3344e0..12bcee2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
 
   test:
     
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     
     steps:
     - uses: actions/checkout@v2