diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index b8c75bd..ac60670 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -17,11 +17,18 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
         os:
           - macos
           - ubuntu
           - windows
 
+        # 3.11 isn't available in macOS yet.
+        # See https://github.com/actions/setup-python/issues/531.
+        exclude:
+          - os: macos
+            python-version: "3.11"
+
     name: tests
     runs-on: ${{ matrix.os }}-latest
     steps: