diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 66a473a..c49e093 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: macos-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Pages
       uses: actions/configure-pages@v3
     - name: Generate Docs
diff --git a/.github/workflows/swiftlint.yml b/.github/workflows/swiftlint.yml
index 0f184bf..8cb30c2 100644
--- a/.github/workflows/swiftlint.yml
+++ b/.github/workflows/swiftlint.yml
@@ -9,7 +9,7 @@ jobs:
   SwiftLint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: GitHub Action for SwiftLint
       uses: norio-nomura/action-swiftlint@3.2.1
       with:
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index bd982c3..5666828 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Setup Swift
       uses: SwiftyLab/setup-swift@latest