diff --git a/poetry.lock b/poetry.lock
index 878cc631a..1c2ba9087 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -656,7 +656,7 @@ six = ">=1.10.0"
 wcwidth = "*"
 
 [package.dependencies.more-itertools]
-python = ">2.7"
+python = ">=2.8"
 version = ">=4.0.0"
 
 [[package]]
@@ -706,7 +706,7 @@ category = "dev"
 description = "YAML parser and emitter for Python"
 name = "pyyaml"
 optional = false
-python-versions = "*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "5.1"
 
 [[package]]
@@ -779,7 +779,7 @@ description = "Python documentation generator"
 name = "sphinx"
 optional = false
 python-versions = ">=3.5"
-version = "2.1.0"
+version = "2.1.1"
 
 [package.dependencies]
 Jinja2 = ">=2.3"
@@ -1066,7 +1066,7 @@ safety = ["0a3a8a178a9c96242b224f033ee8d1d130c0448b0e6622d12deaf37f6c3b4e59", "5
 six = ["3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c", "d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"]
 smmap2 = ["0555a7bf4df71d1ef4218e4807bbf9b201f910174e6e08af2e138d4e517b4dde", "29a9ffa0497e7f2be94ca0ed1ca1aa3cd4cf25a1f6b4f5f87f74b46ed91d609a"]
 snowballstemmer = ["919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128", "9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89"]
-sphinx = ["2c5becc0fd6706dc0aeb4703f9f1f8a1d1eecacf02e9ac5943cbae48b11e5e42", "7a359a91fb04054ec77d68ff97cb8728f8cc322e25f22dc94299d67e0e6a7123"]
+sphinx = ["15143166e786c7faa76fa990d3b6b38ebffe081ef81cffd1d656b07f3b28a1fa", "5fd62ba64235d77a81554d47ff6b17578171b6dbbc992221e9ebc684898fff59"]
 sphinx-autodoc-typehints = ["19fe0b426b7c008181f67f816060da7f046bd8a42723f67a685d26d875bcefd7", "f9c06acfec80766fe8f542a6d6a042e751fcf6ce2e2711a7dc00d8b6daf8aa36"]
 sphinx-typlog-theme = ["0a253a0056060dc2c2bff73edcc905a36337c185c0c517fda9b81a4636178880", "73a513206b6c04eb9ff7b5adc0097c25928948229331b82b7d0b1ec4dfa1c551"]
 sphinxcontrib-applehelp = ["edaa0ab2b2bc74403149cb0209d6775c96de797dfd5b5e2a71981309efab3897", "fb8dee85af95e5c30c91f10e7eb3c8967308518e0f7488a2828ef7bc191d0d5d"]