diff --git a/.github/codecov.yml b/.github/codecov.yml
new file mode 100644
index 0000000..0eb66a9
--- /dev/null
+++ b/.github/codecov.yml
@@ -0,0 +1,13 @@
+# https://docs.codecov.com/docs/common-recipe-list
+# curl --data-binary @codecov.yml https://codecov.io/validate
+coverage:
+  status:
+    patch:
+      default:
+        informational: true
+    project:
+      default:
+        informational: true
+codecov:
+  notify:
+    wait_for_ci: false
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index bead509..bdc4b75 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -22,6 +22,8 @@ jobs:
         php:
           - '8.1'
           - '8.2'
+          - '8.3'
+          - '8.4-dev'
 
     steps:
       - name: Check out code