diff --git a/dev-requirements.txt b/dev-requirements.txt
index e56d9ed..d5dac17 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,8 +1,6 @@
 wheel
-mypy==0.790
 requests==2.24.0
 coreapi==2.3.3
-typing-extensions==3.7.4.3
 gitpython==3.1.9
 pre-commit==2.7.1
 pytest==6.1.1
diff --git a/tests/typecheck/contrib/admin/test_options.yml b/tests/typecheck/contrib/admin/test_options.yml
index aa205cd..0180715 100644
--- a/tests/typecheck/contrib/admin/test_options.yml
+++ b/tests/typecheck/contrib/admin/test_options.yml
@@ -103,7 +103,7 @@
 
       class A(admin.ModelAdmin):
           fieldsets = [  # type: ignore
-              (None, {}),  # E: Key 'fields' missing for TypedDict "_FieldOpts"
+              (None, {}),  # E: Missing key 'fields' for TypedDict "_FieldOpts"
           ]
 -   case: errors_on_invalid_radio_fields
     main: |