diff --git a/poetry.lock b/poetry.lock
index b8693ae..3ec4d62 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -253,35 +253,6 @@ Django = ">=2.2"
 phonenumbers = ["phonenumbers (>=7.0.2)"]
 phonenumberslite = ["phonenumberslite (>=7.0.2)"]
 
-[[package]]
-name = "django-stubs"
-version = "1.9.0"
-description = "Mypy stubs for Django"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-django = "*"
-django-stubs-ext = ">=0.3.0"
-mypy = ">=0.910"
-toml = "*"
-types-pytz = "*"
-types-PyYAML = "*"
-typing-extensions = "*"
-
-[[package]]
-name = "django-stubs-ext"
-version = "0.3.1"
-description = "Monkey-patching and extensions for django-stubs"
-category = "dev"
-optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-django = "*"
-typing-extensions = "*"
-
 [[package]]
 name = "django-two-factor-auth"
 version = "1.13"
@@ -836,22 +807,6 @@ category = "dev"
 optional = false
 python-versions = "*"
 
-[[package]]
-name = "types-pytz"
-version = "2021.3.3"
-description = "Typing stubs for pytz"
-category = "dev"
-optional = false
-python-versions = "*"
-
-[[package]]
-name = "types-pyyaml"
-version = "6.0.1"
-description = "Typing stubs for PyYAML"
-category = "dev"
-optional = false
-python-versions = "*"
-
 [[package]]
 name = "types-requests"
 version = "2.26.3"
@@ -975,7 +930,7 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.10"
-content-hash = "35d359b39bfd7c907a1119797a4badf33b3f3c964a5ec90e85c781cf99fecf7e"
+content-hash = "17e06d5348b12d6c12a95b1a9ba60278cddae6d15f80d4eba7173a67e5b5b123"
 
 [metadata.files]
 asgiref = [
@@ -1141,14 +1096,6 @@ django-phonenumber-field = [
     {file = "django-phonenumber-field-5.2.0.tar.gz", hash = "sha256:52b2e5970133ec5ab701218b802f7ab237229854dc95fd239b7e9e77dc43731d"},
     {file = "django_phonenumber_field-5.2.0-py3-none-any.whl", hash = "sha256:5547fb2b2cc690a306ba77a5038419afc8fa8298a486fb7895008e9067cc7e75"},
 ]
-django-stubs = [
-    {file = "django-stubs-1.9.0.tar.gz", hash = "sha256:664843091636a917faf5256d028476559dc360fdef9050b6df87ab61b21607bf"},
-    {file = "django_stubs-1.9.0-py3-none-any.whl", hash = "sha256:59c9f81af64d214b1954eaf90f037778c8d2b9c2de946a3cda177fefcf588fbd"},
-]
-django-stubs-ext = [
-    {file = "django-stubs-ext-0.3.1.tar.gz", hash = "sha256:783c198d7e39a41be0b90fd843fa2770243a642922af679be4b19e03b82c8c28"},
-    {file = "django_stubs_ext-0.3.1-py3-none-any.whl", hash = "sha256:a51a3e9e844d4e1cacaaedbb33bf3def78a3956eed5d9575a640bd97ccd99cec"},
-]
 django-two-factor-auth = []
 filelock = [
     {file = "filelock-3.4.2-py3-none-any.whl", hash = "sha256:cf0fc6a2f8d26bd900f19bf33915ca70ba4dd8c56903eeb14e1e7a2fd7590146"},
@@ -1578,14 +1525,6 @@ types-pillow = [
     {file = "types-Pillow-8.3.11.tar.gz", hash = "sha256:aa96a739184f48f69e6f30218400623fc5a95f5fec199c447663a32538440405"},
     {file = "types_Pillow-8.3.11-py3-none-any.whl", hash = "sha256:998189334e616b1dd42c9634669efbf726184039e96e9a23ec95246e0ecff3fc"},
 ]
-types-pytz = [
-    {file = "types-pytz-2021.3.3.tar.gz", hash = "sha256:f6d21d6687935a1615db464b1e1df800d19502c36bc0486f43be7dfd2c404947"},
-    {file = "types_pytz-2021.3.3-py3-none-any.whl", hash = "sha256:75859c64c9a97d68259af6da208e8f5aaf4be4536e4d431a82a6e8b848fc183d"},
-]
-types-pyyaml = [
-    {file = "types-PyYAML-6.0.1.tar.gz", hash = "sha256:2e27b0118ca4248a646101c5c318dc02e4ca2866d6bc42e84045dbb851555a76"},
-    {file = "types_PyYAML-6.0.1-py3-none-any.whl", hash = "sha256:d5b318269652e809b5c30a5fe666c50159ab80bfd41cd6bafe655bf20b29fcba"},
-]
 types-requests = [
     {file = "types-requests-2.26.3.tar.gz", hash = "sha256:d63fa617846dcefff5aa2d59e47ab4ffd806e4bb0567115f7adbb5e438302fe4"},
     {file = "types_requests-2.26.3-py3-none-any.whl", hash = "sha256:ad18284931c5ddbf050ccdd138f200d18fd56f88aa3567019d8da9b2d4fe0344"},
diff --git a/pyproject.toml b/pyproject.toml
index 58147a4..2343c5b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,6 @@ types-setuptools = "^57.4.5"
 types-toml = "^0.10.1"
 types-beautifulsoup4 = "^4.10.7"
 types-Pillow = "^8.3.11"
-django-stubs = "^1.9.0"
 
 [tool.black]
 target-version = ['py38']
@@ -64,16 +63,12 @@ env = [
 
 [tool.mypy]
 mypy_path = "$MYPY_CONFIG_FILE_DIR/stubs:$MYPY_CONFIG_FILE_DIR/src"
-plugins = ["mypy_django_plugin.main"]
 disallow_untyped_defs = true
 warn_redundant_casts = true
 strict_equality = true
 disallow_untyped_calls = true
 warn_unreachable = true
-enable_error_code = ["redundant-expr", "truthy-bool"]
-
-[tool.django-stubs]
-django_settings_module = "blog.settings"
+enable_error_code = ["redundant-expr"]
 
 [[tool.mypy.overrides]]
 module = [
diff --git a/src/articles/context_processors.py b/src/articles/context_processors.py
index d4d010a..dd286f4 100644
--- a/src/articles/context_processors.py
+++ b/src/articles/context_processors.py
@@ -50,7 +50,7 @@ def open_graph_image_url(request: HttpRequest) -> dict[str, Any]:
         return {}
     open_graph_image = Attachment.objects.get_open_graph_image()
     url = ""
-    if open_graph_image:
+    if open_graph_image and open_graph_image.processed_file is not None:
         url = open_graph_image.processed_file.get_full_absolute_url(request)
     return {"open_graph_image_url": url}
 
diff --git a/src/articles/views/html.py b/src/articles/views/html.py
index 1ad75e1..d08c980 100644
--- a/src/articles/views/html.py
+++ b/src/articles/views/html.py
@@ -96,7 +96,7 @@ class SearchArticlesListView(PublicArticleListView):
 
 
 class TagArticlesListView(PublicArticleListView):
-    tag = None
+    tag: Tag
     main_title = ""
     html_title = ""
 
diff --git a/src/attachments/models.py b/src/attachments/models.py
index 8eabca9..8758d6a 100644
--- a/src/attachments/models.py
+++ b/src/attachments/models.py
@@ -45,7 +45,7 @@ class Attachment(models.Model):
         return f"{self.description} ({self.original_file.name})"
 
     def reprocess(self) -> None:
-        self.processed_file = None
+        self.processed_file = None  # type: ignore
         self.save()
 
     def save(self, *args: Any, **kwargs: Any) -> None: