diff --git a/.github/workflows/build-test-cxx.yml b/.github/workflows/build-test-cxx.yml
index 0001edb..6c008ff 100644
--- a/.github/workflows/build-test-cxx.yml
+++ b/.github/workflows/build-test-cxx.yml
@@ -15,7 +15,7 @@ on:
       itk-git-tag:
         required: false
         type: string
-        default: 'abf5fa10522a36bc51f42f20f426a622f42ed90d'
+        default: 'v5.3.0'
 
 jobs:
   build-test-cxx:
diff --git a/.github/workflows/build-test-package-python.yml b/.github/workflows/build-test-package-python.yml
index e12070d..9ed35a6 100644
--- a/.github/workflows/build-test-package-python.yml
+++ b/.github/workflows/build-test-package-python.yml
@@ -10,7 +10,11 @@ on:
       itk-wheel-tag:
         required: false
         type: string
-        default: 'v5.3rc04.post4'
+        default: 'v5.3.0'
+      itk-python-package-tag:
+        required: false
+        type: string
+        default: '0f5effc39afbf7cb1ac5ab20faa0996ddb12b34d' # 5.3 patch
     secrets:
       pypi_password:
         required: false  # Packages will not be uploaded to PyPI if not set
@@ -43,7 +47,12 @@ jobs:
 
     - name: 'Fetch build script'
       run: |
-        curl -L https://raw.githubusercontent.com/InsightSoftwareConsortium/ITKPythonPackage/master/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh -O
+        ITK_PYTHON_PACKAGE_GIT_TAG=${{ inputs.itk-python-package-tag }}
+        if [[ -z ${ITK_PYTHON_PACKAGE_GIT_TAG} ]]; then
+          ITK_PYTHON_PACKAGE_GIT_TAG="master"
+        fi
+
+        curl -L https://raw.githubusercontent.com/InsightSoftwareConsortium/ITKPythonPackage/${ITK_PYTHON_PACKAGE_GIT_TAG}/scripts/dockcross-manylinux-download-cache-and-build-module-wheels.sh -O
         chmod u+x dockcross-manylinux-download-cache-and-build-module-wheels.sh
 
     - name: 'Build 🐍 Python 📦 package'
@@ -81,11 +90,16 @@ jobs:
         sudo xcode-select -s "/Applications/Xcode_13.2.1.app"
 
     - name: Get specific version of CMake, Ninja
-      uses: lukka/get-cmake@v3.18.3
+      uses: lukka/get-cmake@v3.22.2
 
     - name: 'Fetch build script'
       run: |
-        curl -L https://raw.githubusercontent.com/InsightSoftwareConsortium/ITKPythonPackage/master/scripts/macpython-download-cache-and-build-module-wheels.sh -O
+        ITK_PYTHON_PACKAGE_GIT_TAG=${{ inputs.itk-python-package-tag }}
+        if [[ -z ${ITK_PYTHON_PACKAGE_GIT_TAG} ]]; then
+          ITK_PYTHON_PACKAGE_GIT_TAG="master"
+        fi
+
+        curl -L https://raw.githubusercontent.com/InsightSoftwareConsortium/ITKPythonPackage/${ITK_PYTHON_PACKAGE_GIT_TAG}/scripts/macpython-download-cache-and-build-module-wheels.sh -O
         chmod u+x macpython-download-cache-and-build-module-wheels.sh
 
     - name: 'Build 🐍 Python 📦 package'
@@ -115,7 +129,7 @@ jobs:
 
     steps:
     - name: Get specific version of CMake, Ninja
-      uses: lukka/get-cmake@v3.18.3
+      uses: lukka/get-cmake@v3.22.2
 
     - uses: actions/checkout@v2
       with:
@@ -139,6 +153,18 @@ jobs:
         curl -L "https://data.kitware.com/api/v1/file/5bbf87ba8d777f06b91f27d6/download/grep-win.zip" -o "grep-win.zip"
         7z x grep-win.zip -o/c/P/grep -aoa -r
 
+        if [[ -n ${{ inputs.itk-python-package-tag }} ]]; then
+          echo "Updating ITKPythonPackage build scripts to ${{ inputs.itk-python-package-tag }}"
+          pushd /c/P/IPP
+          git remote add InsightSoftwareConsortium https://github.com/InsightSoftwareConsortium/ITKPythonPackage.git --tags
+          git fetch InsightSoftwareConsortium
+          git checkout ${{ inputs.itk-python-package-tag }}
+          git status
+          popd
+        else
+          echo "Using ITKPythonPackage scripts included with ITKPythonBuilds archive"
+        fi
+
     - name: 'Build 🐍 Python 📦 package'
       shell: cmd
       run: |
@@ -160,7 +186,7 @@ jobs:
       - build-linux-python-packages
       - build-macos-python-packages
       - build-windows-python-packages
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
 
     steps:
     - name: Download Python Packages