diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 66a81e6..8bbb53e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: actions/cache@v4
         with:
@@ -36,7 +36,7 @@ jobs:
         shell: bash
     steps:
       - name: Check out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up the environment
         uses: ./.github/actions/setup-python-env
@@ -56,7 +56,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up the environment
         uses: ./.github/actions/setup-python-env
diff --git a/.github/workflows/on-release-main.yml b/.github/workflows/on-release-main.yml
index 3fec054..1441dba 100644
--- a/.github/workflows/on-release-main.yml
+++ b/.github/workflows/on-release-main.yml
@@ -9,7 +9,7 @@ jobs:
   set-version:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Export tag
         id: vars
@@ -34,7 +34,7 @@ jobs:
     needs: [set-version]
     steps:
       - name: Check out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up the environment
         uses: ./.github/actions/setup-python-env
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up the environment
         uses: ./.github/actions/setup-python-env
diff --git a/.github/workflows/validate-codecov-config.yml b/.github/workflows/validate-codecov-config.yml
index 2a8fd11..15e67e6 100644
--- a/.github/workflows/validate-codecov-config.yml
+++ b/.github/workflows/validate-codecov-config.yml
@@ -10,6 +10,6 @@ jobs:
   validate-codecov-config:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Validate codecov configuration
         run: curl -sSL --fail-with-body --data-binary @codecov.yaml https://codecov.io/validate