diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e122777..4a96f2a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [macos-latest, windows-latest, ubuntu-latest]
-        python-version: [3.6, 3.7, 3.8, 3.9, '3.10', pypy-3.7]
+        python-version: [3.6, 3.7, 3.8, 3.9, '3.10', '3.11', pypy-3.7]
         exclude:
           # UnicodeDecodeError
           - os: windows-latest