diff --git a/.github/workflows/matrix.json b/.github/workflows/matrix.json
index 2e4e771c..dc880e37 100644
--- a/.github/workflows/matrix.json
+++ b/.github/workflows/matrix.json
@@ -2,6 +2,7 @@
   "include": [
     { "ruby": "3.0" },
     { "ruby": "3.1" },
-    { "ruby": "3.2" }
+    { "ruby": "3.2" },
+    { "ruby": "3.3" }
   ]
 }
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 317dcec8..6cde7164 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -65,5 +65,5 @@ jobs:
         run: bundle exec rake test
 
       - name: Upload coverage
-        if: matrix.ruby == '3.2'
+        if: matrix.ruby == '3.2' || matrix.ruby == '3.3'
         uses: codecov/codecov-action@4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0 # pin@3.1.5