diff --git a/poetry.lock b/poetry.lock
index de76ce5..2143f08 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -209,7 +209,7 @@ python-versions = "*"
 
 [[package]]
 name = "sphinx"
-version = "3.3.1"
+version = "3.4.3"
 description = "Python documentation generator"
 category = "dev"
 optional = false
@@ -235,8 +235,8 @@ sphinxcontrib-serializinghtml = "*"
 
 [package.extras]
 docs = ["sphinxcontrib-websupport"]
-lint = ["flake8 (>=3.5.0)", "flake8-import-order", "mypy (>=0.790)", "docutils-stubs"]
-test = ["pytest", "pytest-cov", "html5lib", "typed-ast", "cython"]
+lint = ["flake8 (>=3.5.0)", "isort", "mypy (>=0.790)", "docutils-stubs"]
+test = ["pytest", "pytest-cov", "html5lib", "cython", "typed-ast"]
 
 [[package]]
 name = "sphinxcontrib-applehelp"
@@ -335,8 +335,8 @@ six = "*"
 
 [metadata]
 lock-version = "1.1"
-python-versions = "^3.5"
-content-hash = "81acb724bb3f7bf2528136306a09c31098cde2e21263724f5b6d1a1196484782"
+python-versions = "^3.6"
+content-hash = "4e31c83bbbc271b7a134e536e11c1f95b4a252fe601000cbc353766abc2cea1f"
 
 [metadata.files]
 alabaster = [
@@ -497,8 +497,8 @@ snowballstemmer = [
     {file = "snowballstemmer-2.0.0.tar.gz", hash = "sha256:df3bac3df4c2c01363f3dd2cfa78cce2840a79b9f1c2d2de9ce8d31683992f52"},
 ]
 sphinx = [
-    {file = "Sphinx-3.3.1-py3-none-any.whl", hash = "sha256:d4e59ad4ea55efbb3c05cde3bfc83bfc14f0c95aa95c3d75346fcce186a47960"},
-    {file = "Sphinx-3.3.1.tar.gz", hash = "sha256:1e8d592225447104d1172be415bc2972bd1357e3e12fdc76edf2261105db4300"},
+    {file = "Sphinx-3.4.3-py3-none-any.whl", hash = "sha256:c314c857e7cd47c856d2c5adff514ac2e6495f8b8e0f886a8a37e9305dfea0d8"},
+    {file = "Sphinx-3.4.3.tar.gz", hash = "sha256:41cad293f954f7d37f803d97eb184158cfd90f51195131e94875bc07cd08b93c"},
 ]
 sphinxcontrib-applehelp = [
     {file = "sphinxcontrib-applehelp-1.0.2.tar.gz", hash = "sha256:a072735ec80e7675e3f432fcae8610ecf509c5f1869d17e2eecff44389cdbc58"},