diff --git a/.github/workflows/stubtest-unused-whitelist.yml b/.github/workflows/stubtest-unused-whitelist.yml
index f4fd9477b..8f6a3d4ed 100644
--- a/.github/workflows/stubtest-unused-whitelist.yml
+++ b/.github/workflows/stubtest-unused-whitelist.yml
@@ -25,10 +25,11 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+      # Keep the mypy version in sync with what we use for stubtest in tests.yml
       - name: Install dependencies
         run: |
           python -m pip install -U pip
-          pip install -U git+git://github.com/python/mypy@24fdf343
+          pip install -U git+git://github.com/python/mypy@master
       - name: Run stubtest
         shell: bash
         run: ./tests/stubtest_unused.py | tee stubtest-output-${{ matrix.os }}-${{ matrix.python-version }} || true
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 909f3063f..a8ee5b784 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -113,6 +113,7 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+      # Keep the mypy version in sync with what we use for stubtest in stubtest-unused-whitelist.yml
       - name: Install dependencies
         run: |
           python -m pip install -U pip