diff --git a/.buildkite/dagster-buildkite/dagster_buildkite/module_build_spec.py b/.buildkite/dagster-buildkite/dagster_buildkite/module_build_spec.py
index e57d856e3b204..1072dec04bbb3 100644
--- a/.buildkite/dagster-buildkite/dagster_buildkite/module_build_spec.py
+++ b/.buildkite/dagster-buildkite/dagster_buildkite/module_build_spec.py
@@ -139,10 +139,7 @@ def get_tox_build_steps(self):
         if self.directory not in MYPY_EXCLUDES:
             tests.append(
                 StepBuilder(f":mypy: {package}")
-                .run(
-                    "pip install mypy==0.790",
-                    f"mypy --config-file mypy/config {self.directory}",
-                )
+                .run("pip install mypy==0.812", f"mypy --config-file mypy/config {self.directory}")
                 .on_integration_image(SupportedPython.V3_7)
                 .build()
             )
diff --git a/mypy/config b/mypy/config
index 16c0a76005825..44830170151e0 100644
--- a/mypy/config
+++ b/mypy/config
@@ -3,9 +3,14 @@ python_version = 3.7
 ignore_missing_imports = True
 show_error_codes = True
 allow_redefinition = True
+exclude = (setup.py$)|(alembic/versions/[0-9a-z_]*.py$)|(alembic/env.py$)
 
 [mypy-dagster.seven]
 ignore_errors = True
 
 [mypy-dagster.grpc.__generated__.*]
 ignore_errors = True
+
+# https://github.com/python/mypy/issues/4008
+[dagster.generate.new_project.setup]
+ignore_errors = True
\ No newline at end of file
diff --git a/python_modules/dagster/dagster/cli/workspace/workspace.py b/python_modules/dagster/dagster/cli/workspace/workspace.py
index 10ce1c8ed8365..38702cfe04b09 100644
--- a/python_modules/dagster/dagster/cli/workspace/workspace.py
+++ b/python_modules/dagster/dagster/cli/workspace/workspace.py
@@ -214,7 +214,7 @@ def has_repository_location(self, location_name):
         check.str_param(location_name, "location_name")
         return self.get_repository_location(location_name) != None
 
-    def get_repository_location(self, location_name):
+    def get_repository_location(self, location_name: str) -> Optional[RepositoryLocation]:
         with self._lock:
             return (
                 self._location_entry_dict.get(location_name).repository_location
diff --git a/python_modules/dagster/dagster/seven/compat/pendulum.py b/python_modules/dagster/dagster/seven/compat/pendulum.py
index 851cc73c84d2e..2043f27c95c90 100644
--- a/python_modules/dagster/dagster/seven/compat/pendulum.py
+++ b/python_modules/dagster/dagster/seven/compat/pendulum.py
@@ -4,7 +4,8 @@
 import pendulum
 
 _IS_PENDULUM_2 = (
-    hasattr(pendulum, "__version__") and packaging.version.parse(pendulum.__version__).major == 2
+    hasattr(pendulum, "__version__")
+    and getattr(packaging.version.parse(pendulum.__version__), "major") == 2
 )
 
 
diff --git a/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_one/pipelines.py b/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_one/pipelines.py
index 2f7e1e49c469c..df0d8fa356482 100644
--- a/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_one/pipelines.py
+++ b/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_one/pipelines.py
@@ -1,3 +1,4 @@
+# type: ignore[attr-defined]
 from dagster import pipeline
 from solids import example_one_solid  # pylint: disable=import-error
 
diff --git a/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_two/pipelines.py b/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_two/pipelines.py
index a510d51b50964..5d255291a816e 100644
--- a/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_two/pipelines.py
+++ b/python_modules/dagster/dagster_tests/cli_tests/workspace_tests/multi_file_target_workspace/example_two/pipelines.py
@@ -1,3 +1,4 @@
+# type: ignore[attr-defined]
 from dagster import pipeline
 from solids import example_two_solid  # pylint: disable=import-error
 
diff --git a/python_modules/dagster/dagster_tests/general_tests/py3_tests/test_type_examples_py3.py b/python_modules/dagster/dagster_tests/general_tests/py3_tests/test_type_examples_py3.py
index 38d52bd3978db..6c5cd22267794 100644
--- a/python_modules/dagster/dagster_tests/general_tests/py3_tests/test_type_examples_py3.py
+++ b/python_modules/dagster/dagster_tests/general_tests/py3_tests/test_type_examples_py3.py
@@ -1,3 +1,7 @@
+# See: https://github.com/dagster-io/dagster/issues/4209
+# type: ignore[valid-type]
+# type: ignore[attr-defined]
+
 import os
 import pickle
 import tempfile