diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 29b86d99..0dd6d715 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python 3.x
         uses: actions/setup-python@v6
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index b0262821..fb5c5ec3 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # fecth all history so that setuptools-scm works
           fetch-depth: 0
diff --git a/.github/workflows/pypi-publish.yml b/.github/workflows/pypi-publish.yml
index 1b9a239c..db6f4520 100644
--- a/.github/workflows/pypi-publish.yml
+++ b/.github/workflows/pypi-publish.yml
@@ -12,7 +12,7 @@ jobs:
     if: github.repository == 'seisman/HinetPy'
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python
       uses: actions/setup-python@v6
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e1f70c44..8f6fa45d 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # fecth all history so that setuptools-scm works
           fetch-depth: 0