diff --git a/poetry.lock b/poetry.lock
index b4ca4cf..52d5f8b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -770,7 +770,7 @@ python-versions = "*"
 
 [[package]]
 name = "sphinx"
-version = "4.0.2"
+version = "4.0.3"
 description = "Python documentation generator"
 category = "dev"
 optional = false
@@ -796,7 +796,7 @@ sphinxcontrib-serializinghtml = "*"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.800)", "docutils-stubs"]
+lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.900)", "docutils-stubs", "types-typed-ast", "types-pkg-resources", "types-requests"]
 test = ["pytest", "pytest-cov", "html5lib", "cython", "typed-ast"]
 
 [[package]]
@@ -1030,7 +1030,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "2a4e9d0ac99334dab19436458c8930d88893855f890e2480785ed62a8f6ab882"
+content-hash = "429382298c91aeb22b9587f2fb7ad10d237a10a4bdb32ff8ebf8668d5a8ac72c"
 
 [metadata.files]
 alabaster = [
@@ -1505,8 +1505,8 @@ snowballstemmer = [
     {file = "snowballstemmer-2.1.0.tar.gz", hash = "sha256:e997baa4f2e9139951b6f4c631bad912dfd3c792467e2f03d7239464af90e914"},
 ]
 sphinx = [
-    {file = "Sphinx-4.0.2-py3-none-any.whl", hash = "sha256:d1cb10bee9c4231f1700ec2e24a91be3f3a3aba066ea4ca9f3bbe47e59d5a1d4"},
-    {file = "Sphinx-4.0.2.tar.gz", hash = "sha256:b5c2ae4120bf00c799ba9b3699bc895816d272d120080fbc967292f29b52b48c"},
+    {file = "Sphinx-4.0.3-py3-none-any.whl", hash = "sha256:5747f3c855028076fcff1e4df5e75e07c836f0ac11f7df886747231092cfe4ad"},
+    {file = "Sphinx-4.0.3.tar.gz", hash = "sha256:dff357e6a208eb7edb2002714733ac21a9fe597e73609ff417ab8cf0c6b4fbb8"},
 ]
 sphinx-autobuild = [
     {file = "sphinx-autobuild-2021.3.14.tar.gz", hash = "sha256:de1ca3b66e271d2b5b5140c35034c89e47f263f2cd5db302c9217065f7443f05"},
diff --git a/pyproject.toml b/pyproject.toml
index 4e8ee86..c304b39 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ coverage = {extras = ["toml"], version = "^5.3"}
 pytest-django = "^4.1.0"
 pygments = "^2.7.4"
 xdoctest = "^0.15.5"
-sphinx = "^4.0.2"
+sphinx = "^4.0.3"
 sphinx-autobuild = "^2021.3.14"
 darglint = "^1.5.8"
 flake8-docstrings = "^1.5.0"