diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 8c64afb8..838a69b0 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -9,7 +9,7 @@ jobs:
   build-nix:
     strategy:
       matrix:
-        os: [ ubuntu-22, macos-12 ]
+        os: [ ubuntu-22.04, macos-12 ]
     runs-on: ${{ matrix.os }}
 
     steps: