diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 694b52f..375944f 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -11,4 +11,4 @@ jobs:
         name: Deploy or Delivery
         runs-on: ubuntu-latest
         steps:
-            -   uses: actions/checkout@v4
+            -   uses: actions/checkout@v5
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a31780b..41c4a0d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
         runs-on: ${{ matrix.os }}
 
         steps:
-            -   uses: actions/checkout@v4
+            -   uses: actions/checkout@v5
             -   uses: pnpm/action-setup@v4
                 with:
                     version: 9
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 22407d8..2d7f4db 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -11,7 +11,7 @@ jobs:
         steps:
             -
                 name: Checkout
-                uses: actions/checkout@v4
+                uses: actions/checkout@v5
             -
                 name: Acquire tag name
                 run: echo "RELEASE_VERSION=${GITHUB_REF_NAME#refs/*/}" >> $GITHUB_ENV
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b17538c..b25e05f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,7 +10,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             -   name: Checkout Code
-                uses: actions/checkout@v4
+                uses: actions/checkout@v5
                 with:
                     fetch-depth: 0
 
@@ -41,7 +41,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             -   name: Checkout Code
-                uses: actions/checkout@v4
+                uses: actions/checkout@v5
                 with:
                     fetch-depth: 0
 
diff --git a/.github/workflows/test_custom_action_itself.yml b/.github/workflows/test_custom_action_itself.yml
index be6e7ed..b290958 100644
--- a/.github/workflows/test_custom_action_itself.yml
+++ b/.github/workflows/test_custom_action_itself.yml
@@ -20,7 +20,7 @@ jobs:
         runs-on: ${{ matrix.os }}
 
         steps:
-            -   uses: actions/checkout@v4
+            -   uses: actions/checkout@v5
 
             -   name: Create input file
                 run: echo "This is the original file content." > input.txt