diff --git a/.github/workflows/linuxci.yml b/.github/workflows/linuxci.yml
index fc730a5..d2ba5f0 100644
--- a/.github/workflows/linuxci.yml
+++ b/.github/workflows/linuxci.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Check out source repository
         uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }} environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
       - name: Python environment report
diff --git a/.github/workflows/macosci.yml b/.github/workflows/macosci.yml
index ecdbc2a..b111afa 100644
--- a/.github/workflows/macosci.yml
+++ b/.github/workflows/macosci.yml
@@ -17,7 +17,7 @@ jobs:
       - name: Check out source repository
         uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }} environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
       - name: Python environment report
diff --git a/.github/workflows/windowsci.yml b/.github/workflows/windowsci.yml
index 007c2b8..9dcd107 100644
--- a/.github/workflows/windowsci.yml
+++ b/.github/workflows/windowsci.yml
@@ -17,9 +17,11 @@ jobs:
       - name: Check out source repository
         uses: actions/checkout@v2
       - name: Set up Python ${{ matrix.python-version }} environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Windows-specific Python environment workaround
+        run: python -m pip install --upgrade pip==21.3.1
       - name: Python environment report
         run: python -c "import sys; print(sys.version)"
       - name: Run ${{ matrix.python-version }} platform tests (default)
diff --git a/README.md b/README.md
index 76edce6..e7a6738 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ jobs:
       - name: Check out source repository
         uses: actions/checkout@v2
       - name: Set up Python environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: "3.8"
       - name: flake8 Lint
@@ -49,7 +49,7 @@ jobs:
       - name: Check out source repository
         uses: actions/checkout@v2
       - name: Set up Python environment
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v2
         with:
           python-version: "3.8"
       - name: flake8 Lint