diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 66f720d46..b33481408 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,12 +15,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
 
-    - name: Set up Ruby 2.7
+    - name: Set up Ruby 3.0
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.7
+        ruby-version: 3.0
 
     - name: Rubocop
       run: |
@@ -42,10 +42,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2']
+        ruby: ['3.0', '3.1', '3.2']
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index cea225d74..77fac5bc6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v4
 
       - name: Set up Ruby 2.7
         uses: ruby/setup-ruby@v1