diff --git a/pyproject.toml b/pyproject.toml
index aa7fa372b3..7f74060916 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,7 @@ testing = [
 	# for tools/finalize.py
 	'jaraco.develop >= 7.21; python_version >= "3.9" and sys_platform != "cygwin"',
 	"pytest-home >= 0.5",
-	"mypy==1.9", # pin mypy version so a new version doesn't suddenly cause the CI to fail
+	"mypy==1.10.0", # pin mypy version so a new version doesn't suddenly cause the CI to fail
 	# No Python 3.11 dependencies require tomli, but needed for type-checking since we import it directly
 	"tomli",
 	# No Python 3.12 dependencies require importlib_metadata, but needed for type-checking since we import it directly