diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3e393bd9..bd0f667b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -87,8 +87,9 @@ jobs:
           command: test
 
     strategy:
-      os: [ubuntu-latest, macos-latest, windows-latest]
-      rust: [stable, nightly]
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        rust: [stable, nightly]
 
   lints:
     name: Lints