diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml
index 6be732e8e..7b17b1d30 100644
--- a/.github/workflows/build-and-publish.yml
+++ b/.github/workflows/build-and-publish.yml
@@ -15,7 +15,7 @@ jobs:
       contents: write
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
diff --git a/.github/workflows/check-release-tag.yml b/.github/workflows/check-release-tag.yml
index 8c4f4359d..75d95ec99 100644
--- a/.github/workflows/check-release-tag.yml
+++ b/.github/workflows/check-release-tag.yml
@@ -12,7 +12,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 7588f60bb..8d941f1b6 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -11,7 +11,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
@@ -29,7 +29,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -56,7 +56,7 @@ jobs:
     if: ${{ github.ref != 'refs/heads/main' && github.ref != 'refs/heads/master' }}
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -75,7 +75,7 @@ jobs:
       matrix: ${{ fromJson(needs.build-matrix.outputs.matrix) }}
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -106,7 +106,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -128,7 +128,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -152,7 +152,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -172,7 +172,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         # The PTB has unit tests which require the fetch-depth to be 0.
         with:
           fetch-depth: 0
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index a83bd6314..8ead89753 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/matrix-all.yml b/.github/workflows/matrix-all.yml
index dc565241d..fbed33a85 100644
--- a/.github/workflows/matrix-all.yml
+++ b/.github/workflows/matrix-all.yml
@@ -14,7 +14,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
diff --git a/.github/workflows/matrix-exasol.yml b/.github/workflows/matrix-exasol.yml
index db45a4262..3319b89b4 100644
--- a/.github/workflows/matrix-exasol.yml
+++ b/.github/workflows/matrix-exasol.yml
@@ -14,7 +14,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
diff --git a/.github/workflows/matrix-python.yml b/.github/workflows/matrix-python.yml
index 2403aeb57..7805dd53a 100644
--- a/.github/workflows/matrix-python.yml
+++ b/.github/workflows/matrix-python.yml
@@ -14,7 +14,7 @@ jobs:
       contents: read
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
diff --git a/.github/workflows/report.yml b/.github/workflows/report.yml
index 847d52dda..b5090c8fd 100644
--- a/.github/workflows/report.yml
+++ b/.github/workflows/report.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/slow-checks.yml b/.github/workflows/slow-checks.yml
index 5d10a097d..b82f0c052 100644
--- a/.github/workflows/slow-checks.yml
+++ b/.github/workflows/slow-checks.yml
@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python & Poetry Environment
         uses: ./.github/actions/python-environment
@@ -65,7 +65,7 @@ jobs:
 
     steps:
       - name: SCM Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Python & Poetry Environment
         uses: ./.github/actions/python-environment