diff --git a/.github/workflows/ci_v26.0.yml b/.github/workflows/ci_v26.0.yml
index 3048581..2d1b5f8 100644
--- a/.github/workflows/ci_v26.0.yml
+++ b/.github/workflows/ci_v26.0.yml
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for misspellings
         uses: codespell-project/actions-codespell@v2
diff --git a/.github/workflows/ci_v27.0.yml b/.github/workflows/ci_v27.0.yml
index 9a2f3db..dc82e3c 100644
--- a/.github/workflows/ci_v27.0.yml
+++ b/.github/workflows/ci_v27.0.yml
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for misspellings
         uses: codespell-project/actions-codespell@v2
diff --git a/.github/workflows/ci_v27.1.yml b/.github/workflows/ci_v27.1.yml
index 084af47..0329b5f 100644
--- a/.github/workflows/ci_v27.1.yml
+++ b/.github/workflows/ci_v27.1.yml
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for misspellings
         uses: codespell-project/actions-codespell@v2
diff --git a/.github/workflows/ci_v28.0.yml b/.github/workflows/ci_v28.0.yml
index e90b490..7fe13b0 100644
--- a/.github/workflows/ci_v28.0.yml
+++ b/.github/workflows/ci_v28.0.yml
@@ -44,7 +44,7 @@ jobs:
 
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check for misspellings
         uses: codespell-project/actions-codespell@v2