diff --git a/mypy.ini b/mypy.ini
index 9d810b738..797ed0bca 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -3,6 +3,22 @@
 # with conditional imports (like secrets.py).
 python_version = 3.6
 
+# --strict
+warn_unused_configs = True
+warn_redundant_casts = True
+warn_unused_ignores = True
+disallow_subclassing_any = True
+# disallow_untyped_calls = True
+# disallow_untyped_defs = True
+# disallow_incomplete_defs = True
+# check_untyped_defs = True
+# disallow_untyped_decorators = True
+# no_implicit_optional = True
+# warn_return_any = True
+
+# disallow_any_generics = True
+
+
 [mypy-faulthandler]
 # https://github.com/python/typeshed/pull/2627
 ignore_missing_imports = True
@@ -30,3 +46,7 @@ ignore_missing_imports = True
 [mypy-bdb]
 # stdlib, missing in typeshed
 ignore_missing_imports = True
+
+[mypy-qutebrowser.browser.webkit.rfc6266]
+# subclasses dynamic PyPEG2 classes
+disallow_subclassing_any = False