diff --git a/.github/workflows/docker-ci-cd.yml b/.github/workflows/docker-ci-cd.yml
index f0f111e..81a21d2 100644
--- a/.github/workflows/docker-ci-cd.yml
+++ b/.github/workflows/docker-ci-cd.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.11'
           cache: pip
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index b04a807..a5ddce1 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -29,7 +29,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.11"
           cache: pip
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 0a2d80a..588960f 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
           # Issue #203: cache pip wheels so pre-commit hooks install faster
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index a8bf363..6089e68 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -30,7 +30,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python-version }}
         # Issue #203: cache pip wheels keyed on all requirements files so the
@@ -92,7 +92,7 @@ jobs:
     - uses: actions/checkout@v4
 
     - name: Set up Python 3.11
-      uses: actions/setup-python@v5
+      uses: actions/setup-python@v6
       with:
         python-version: "3.11"
         cache: pip
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index c093d53..312baef 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -54,7 +54,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
           cache: pip
@@ -81,7 +81,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.10"
           cache: pip