diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index c6618611..02232fcb 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -11,7 +11,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
       - run: python -m pip install -U tox
       - run: tox -e pylint
 
@@ -19,7 +21,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
       - run: python -m pip install -U tox
       - run: tox -e mypy,mypy-mindeps,mypy-test
 
@@ -39,7 +43,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python-version }}
       - name: install tox
@@ -51,7 +55,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
       - run: python -m pip install -U tox
       - run: tox -e test-lazy-imports
 
@@ -60,7 +66,7 @@ jobs:
     name: "mindeps"
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.6"
       - name: install tox
@@ -72,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: "3.10"
       - name: install tox
diff --git a/.github/workflows/update_pr_references.yaml b/.github/workflows/update_pr_references.yaml
index dd3d7460..e2961f22 100644
--- a/.github/workflows/update_pr_references.yaml
+++ b/.github/workflows/update_pr_references.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: actions/setup-python@v3
+      - uses: actions/setup-python@v4
       - name: update any PR numbers in change fragments
         run: |
           python ./changelog.d/update-pr-refs.py