diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 25be0caa502..9c209e29cc5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -34,7 +34,7 @@ repos:
     -   id: pyupgrade
         args: [--keep-percent-format]
 -   repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.910  # NOTE: keep this in sync with setup.py.
+    rev: v0.931  # NOTE: keep this in sync with setup.py.
     hooks:
     -   id: mypy
         files: ^(src/|testing/)
diff --git a/setup.py b/setup.py
index 4982b2381a8..b09e2b30cfb 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@ def main():
                 "xmlschema",
             ],  # fmt: on
             "checkqa-mypy": [
-                "mypy==v0.910",  # keep this in sync with .pre-commit-config.yaml.
+                "mypy==v0.931",  # keep this in sync with .pre-commit-config.yaml.
                 "types-setuptools",
             ],
         },
diff --git a/tox.ini b/tox.ini
index f1e7319658c..d53cdd7b570 100644
--- a/tox.ini
+++ b/tox.ini
@@ -95,10 +95,15 @@ commands = mypy {posargs:src testing}
 # Checks minimum supported Python version, and general checks.
 # This uses the actual Python version, so that mypy does not fail with
 # unsupported deps (e.g. packaging 21 on py35, causing a mypy syntax error).
+# NOTE: mypy v0.920 dropped support for Python 3.5, so it is pinned to v0.910.
+#       And since tox does not allow for overriding deps from extras, they are
+#       inlined here.
 [testenv:mypy_ci_min]
 basepython = python3.5
-deps = {[testenv:mypy]deps}
-extras = {[testenv:mypy]extras}
+deps =
+  mypy==v0.910
+  types-setuptools
+extras =
 whitelist_externals = sh
 commands =
   mypy --python-version 3.5 --warn-unused-ignores {posargs:src testing}