Fixes #870 (#871)

* Fixes #870

Signed-off-by: Himanshu-Balasamanta <himanshubb.eee18@itbhu.ac.in>

* Updated mypy version in setup.py to == 0.931

* Update setup.py

Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

requirements.txt

@@ -9,3 +9,4 @@ pytest-mypy-plugins==1.9.3
 psycopg2-binary
 -e ./django_stubs_ext
 -e .
+mypy==0.931

setup.py

@@ -21,7 +21,7 @@ with open("README.md") as f:
     readme = f.read()
 
 dependencies = [
-    "mypy>=0.931",
+    "mypy>=0.930,<0.940",
     "django",
     "django-stubs-ext>=0.3.0",
     "tomli",