diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8a8aaa8..e6c8c02 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -45,7 +45,7 @@ jobs:
   test-eslint:
     strategy:
       matrix:
-        eslint-version: [2.0.0, 3.0.0, 4.0.0, 5.0.0, 6.0.0, 7.0.0, 8.0.0]
+        eslint-version: [2.0.0, 3.0.0, 4.0.0, 5.0.0, 6.0.0, 7.0.0, 8.0.0, 9.0.0]
 
     name: Tests (ESLint ${{ matrix.eslint-version }})
     runs-on: ubuntu-latest