diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 4c99b3e..8853a27 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -24,7 +24,7 @@ jobs:
     strategy:
       matrix:
         # No Windows this time. Some tests expect Unix-style paths.
-        os: [ ubuntu-latest, macos-latest ]
+        os: [ ubuntu-latest, macos-latest, windows-latest]
       fail-fast: false
 
     steps: