diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index d079998..eb73780 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-20.04
     
     strategy:
       matrix: