diff --git a/pyproject.toml b/pyproject.toml
index 06f6ceba..a77e99f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ test = [
 ]
 typing = [
   "importlib-metadata >= 5.1",
-  "mypy == 0.991",
+  "mypy == 1.2.0",
   "tomli",
   "typing-extensions >= 3.7.4.3",
 ]
diff --git a/src/build/_util.py b/src/build/_util.py
index 18168fe0..2fe3d7cb 100644
--- a/src/build/_util.py
+++ b/src/build/_util.py
@@ -49,7 +49,7 @@ def check_dependency(
             return
 
     try:
-        dist = importlib_metadata.distribution(req.name)  # type: ignore[no-untyped-call]
+        dist = importlib_metadata.distribution(req.name)
     except importlib_metadata.PackageNotFoundError:
         # dependency is not installed in the environment.
         yield (*ancestral_req_strings, normalised_req_string)
diff --git a/src/build/env.py b/src/build/env.py
index d416e104..9fbd7118 100644
--- a/src/build/env.py
+++ b/src/build/env.py
@@ -223,7 +223,7 @@ def _create_isolated_env_venv(path: str) -> tuple[str, str]:
     executable, script_dir, purelib = _find_executable_and_scripts(path)
 
     # Get the version of pip in the environment
-    pip_distribution = next(iter(metadata.distributions(name='pip', path=[purelib])))  # type: ignore[no-untyped-call]
+    pip_distribution = next(iter(metadata.distributions(name='pip', path=[purelib])))
     current_pip_version = packaging.version.Version(pip_distribution.version)
 
     if platform.system() == 'Darwin' and int(platform.mac_ver()[0].split('.')[0]) >= 11:
diff --git a/tox.ini b/tox.ini
index 4b8a69bd..159d8b45 100644
--- a/tox.ini
+++ b/tox.ini
@@ -55,6 +55,8 @@ commands_pre =
 [testenv:type]
 description = run type check on code base
 extras = typing
+setenv =
+    PYTHONWARNDEFAULTENCODING =
 commands =
     mypy