diff --git a/poetry.lock b/poetry.lock
index 4195de1..cd1a8a6 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -942,7 +942,7 @@ description = "Python documentation generator"
 name = "sphinx"
 optional = false
 python-versions = ">=3.5"
-version = "2.2.2"
+version = "2.3.0"
 
 [package.dependencies]
 Jinja2 = ">=2.3"
@@ -1157,7 +1157,7 @@ version = "0.6.0"
 more-itertools = "*"
 
 [metadata]
-content-hash = "ea9f754aa242f888bc377b0b8416646203cac86765a7a8b48ab34fea8c82ba1e"
+content-hash = "008391797c7ed4e7edf856c547133ed117bb6fff96fbbd41005c4d878ba210ac"
 python-versions = "^3.6"
 
 [metadata.hashes]
@@ -1250,7 +1250,7 @@ six = ["1f1b7d42e254082a9db6279deae68afb421ceba6158efa6131de7b3003ee93fd", "30f6
 smmap2 = ["0555a7bf4df71d1ef4218e4807bbf9b201f910174e6e08af2e138d4e517b4dde", "29a9ffa0497e7f2be94ca0ed1ca1aa3cd4cf25a1f6b4f5f87f74b46ed91d609a"]
 snowballstemmer = ["209f257d7533fdb3cb73bdbd24f436239ca3b2fa67d56f6ff88e86be08cc5ef0", "df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"]
 sortedcontainers = ["974e9a32f56b17c1bac2aebd9dcf197f3eb9cd30553c5852a3187ad162e1a03a", "d9e96492dd51fae31e60837736b38fe42a187b5404c16606ff7ee7cd582d4c60"]
-sphinx = ["3b16e48e791a322d584489ab28d8800652123d1fbfdd173e2965a31d40bf22d7", "559c1a8ed1365a982f77650720b41114414139a635692a23c2990824d0a84cf2"]
+sphinx = ["0a11e2fd31fe5c7e64b4fc53c2c022946512f021d603eb41ac6ae51d5fcbb574", "138e39aa10f28d52aa5759fc6d1cba2be6a4b750010974047fa7d0e31addcf63"]
 sphinx-autodoc-typehints = ["27c9e6ef4f4451766ab8d08b2d8520933b97beb21c913f3df9ab2e59b56e6c6c", "a6b3180167479aca2c4d1ed3b5cb044a70a76cccd6b38662d39288ebd9f0dff0"]
 sphinxcontrib-applehelp = ["edaa0ab2b2bc74403149cb0209d6775c96de797dfd5b5e2a71981309efab3897", "fb8dee85af95e5c30c91f10e7eb3c8967308518e0f7488a2828ef7bc191d0d5d"]
 sphinxcontrib-devhelp = ["6c64b077937330a9128a4da74586e8c2130262f014689b4b89e2d08ee7294a34", "9512ecb00a2b0821a146736b39f7aeb90759834b07e81e8cc23a9c70bacb9981"]
diff --git a/pyproject.toml b/pyproject.toml
index 9d5d77f..a259eda 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ pytest = "^5.3"
 pytest-cov = "^2.8"
 pytest-randomly = "^3.0"
 
-sphinx = "^2.2"
+sphinx = "^2.3"
 sphinx-autodoc-typehints = "^1.10"
 doc8 = "^0.8.0"
 tomlkit = "^0.5.8"