diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a4f895c4..dee1699e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -34,7 +34,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install tox tox-gh-actions
+          pip install tox tox-gh-actions setuptools
 
       - name: Check MANIFEST.in for completeness
         run: tox -e manifest
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 95d74fa6..06d48ed6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -79,7 +79,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install tox tox-gh-actions
+          python -m pip install tox tox-gh-actions setuptools
 
       - name: Setuptools self-test
         run: |
diff --git a/.github/workflows/cs.yml b/.github/workflows/cs.yml
index 99225771..47560734 100644
--- a/.github/workflows/cs.yml
+++ b/.github/workflows/cs.yml
@@ -35,7 +35,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install tox tox-gh-actions
+          pip install tox tox-gh-actions setuptools
 
       - name: Lint with tox
         run: tox -e lint
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 5da63970..3952a8f0 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -36,7 +36,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install tox tox-gh-actions
+          pip install tox tox-gh-actions setuptools
 
       - name: Check external links in the package documentation
         run: tox -e linkcheck