diff --git a/.github/workflows/mainline-compile.yml b/.github/workflows/mainline-compile.yml
index 0986cd2f..01694790 100644
--- a/.github/workflows/mainline-compile.yml
+++ b/.github/workflows/mainline-compile.yml
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           submodules: true
           fetch-depth: 0
diff --git a/.github/workflows/mainline-format.yml b/.github/workflows/mainline-format.yml
index 4183bb57..78871257 100644
--- a/.github/workflows/mainline-format.yml
+++ b/.github/workflows/mainline-format.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Fix permissions
         run: chown -R ci:ci "$GITHUB_WORKSPACE"
diff --git a/.github/workflows/mainline-lint.yml b/.github/workflows/mainline-lint.yml
index 17c8d592..903e0a01 100644
--- a/.github/workflows/mainline-lint.yml
+++ b/.github/workflows/mainline-lint.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
           submodules: true
diff --git a/.github/workflows/mainline-prepare.yml b/.github/workflows/mainline-prepare.yml
index bf062ee4..ec6535b6 100644
--- a/.github/workflows/mainline-prepare.yml
+++ b/.github/workflows/mainline-prepare.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Log in to GHCR
         uses: docker/login-action@v3
diff --git a/.github/workflows/version-increment.yml b/.github/workflows/version-increment.yml
index 8d21cb58..4ccb4c41 100644
--- a/.github/workflows/version-increment.yml
+++ b/.github/workflows/version-increment.yml
@@ -30,7 +30,7 @@ jobs:
       contains(github.event.head_commit.message, '[ci-major-increase]')
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0