diff --git a/.github/workflows/swift.yml b/.github/workflows/swift.yml
index 1659db0..07638c5 100644
--- a/.github/workflows/swift.yml
+++ b/.github/workflows/swift.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest]
-        swift: ["5.7", "5.8"]
+        swift: ["5.7", "5.8", "5.9"]
     runs-on: macos-latest
 
     steps: