diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b3cb6ac..19e8787 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['3.2', '3.3', '3.4']
+        ruby-version: ['3.2', '3.3', '3.4', '4.0']
 
     steps:
     - uses: actions/checkout@v6
diff --git a/.github/workflows/release-drafter.yml b/.github/workflows/release-drafter.yml
index 2571b54..1f6a4e5 100644
--- a/.github/workflows/release-drafter.yml
+++ b/.github/workflows/release-drafter.yml
@@ -5,10 +5,6 @@ on:
     # branches to consider in the event; optional, defaults to all
     branches:
       - master
-  # pull_request event is required only for autolabeler
-  pull_request:
-    # Only following types are handled by the action, but one can default to all as well
-    types: [opened, reopened, synchronize]
 
 jobs:
   update_release_draft: