diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 984a666..121cebc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -48,7 +48,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
@@ -100,7 +100,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -132,7 +132,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -178,7 +178,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
@@ -228,7 +228,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
@@ -267,7 +267,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
diff --git a/.github/workflows/darwin-x86_64-validation.yml b/.github/workflows/darwin-x86_64-validation.yml
index a31089d..829edab 100644
--- a/.github/workflows/darwin-x86_64-validation.yml
+++ b/.github/workflows/darwin-x86_64-validation.yml
@@ -20,7 +20,7 @@ jobs:
         run: ./scripts/workflows/configure_runtime_dirs.sh
 
       - name: Set up Python 3.12
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
diff --git a/.github/workflows/full-dataset-quality-gate-regression.yml b/.github/workflows/full-dataset-quality-gate-regression.yml
index 53f6ad3..4fddc69 100644
--- a/.github/workflows/full-dataset-quality-gate-regression.yml
+++ b/.github/workflows/full-dataset-quality-gate-regression.yml
@@ -71,7 +71,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
@@ -150,7 +150,7 @@ jobs:
         uses: actions/checkout@v7
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
 
diff --git a/.github/workflows/linux-python-3_13-cli-validation.yml b/.github/workflows/linux-python-3_13-cli-validation.yml
index 3dc572f..0a7292a 100644
--- a/.github/workflows/linux-python-3_13-cli-validation.yml
+++ b/.github/workflows/linux-python-3_13-cli-validation.yml
@@ -49,7 +49,7 @@ jobs:
         run: ./scripts/workflows/configure_runtime_dirs.sh
 
       - name: Set up Python 3.13
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.13"
 
diff --git a/.github/workflows/linux-selfhosted-gpu-validation.yml b/.github/workflows/linux-selfhosted-gpu-validation.yml
index ddbfbbc..fb0e383 100644
--- a/.github/workflows/linux-selfhosted-gpu-validation.yml
+++ b/.github/workflows/linux-selfhosted-gpu-validation.yml
@@ -106,7 +106,7 @@ jobs:
         run: ./scripts/workflows/configure_runtime_dirs.sh
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: ${{ inputs.python_version }}
 
@@ -218,7 +218,7 @@ jobs:
         run: ./scripts/workflows/configure_runtime_dirs.sh
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: ${{ inputs.python_version }}
 
diff --git a/.github/workflows/macos15-mps-validation.yml b/.github/workflows/macos15-mps-validation.yml
index da91abb..16ff89a 100644
--- a/.github/workflows/macos15-mps-validation.yml
+++ b/.github/workflows/macos15-mps-validation.yml
@@ -58,7 +58,7 @@ jobs:
         run: ./scripts/workflows/configure_runtime_dirs.sh
 
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: ${{ inputs.python_version }}
 
diff --git a/.github/workflows/python-publish-testpypi.yml b/.github/workflows/python-publish-testpypi.yml
index e055296..6f16e7c 100644
--- a/.github/workflows/python-publish-testpypi.yml
+++ b/.github/workflows/python-publish-testpypi.yml
@@ -59,7 +59,7 @@ jobs:
         with:
           ref: ${{ needs.verify-ci.outputs.head_sha }}
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
       - name: Install uv
diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 452485e..5de4a82 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -81,7 +81,7 @@ jobs:
         with:
           ref: ${{ needs.verify-ci.outputs.head_sha }}
       - name: Set up Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v6.3.0
         with:
           python-version: "3.12"
       - name: Install uv