diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 47fd776..8db20f7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - '3.1.2'
+          - '4.0.1'
 
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 1c8cb96..3e98a59 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1.2
+          ruby-version: 4.0.1
 
       - name: publish gem
         run: |