diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 0d0d88f..74f4895 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -35,7 +35,7 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -81,7 +81,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -126,7 +126,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
diff --git a/.github/workflows/deploy_pypi.yml b/.github/workflows/deploy_pypi.yml
index a40b26f..0d84a57 100644
--- a/.github/workflows/deploy_pypi.yml
+++ b/.github/workflows/deploy_pypi.yml
@@ -24,7 +24,7 @@ jobs:
     if: github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch'
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/deploy_test_pypi.yml b/.github/workflows/deploy_test_pypi.yml
index a2bc0b1..9a46825 100644
--- a/.github/workflows/deploy_test_pypi.yml
+++ b/.github/workflows/deploy_test_pypi.yml
@@ -24,7 +24,7 @@ jobs:
     if: github.event.workflow_run.conclusion == 'success' || github.event_name == 'workflow_dispatch'
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v5