diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 94e5dd6..9a3aa1d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        emacs_version: ['28.1', '29.4', '30.2']
+        emacs_version: ['28.1', '29.4', '30.2', '31.1']
     steps:
       - uses: actions/checkout@v4
       - uses: jcs090218/setup-emacs@master