diff --git a/poetry.lock b/poetry.lock
index 238c4b1..a4ecc3b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -114,25 +114,20 @@ murmur = ["mmh3"]
 
 [[package]]
 category = "dev"
-description = "Discover and load entry points from installed packages."
-name = "entrypoints"
-optional = false
-python-versions = ">=2.7"
-version = "0.3"
-
-[[package]]
-category = "dev"
-description = "the modular source code checker: pep8, pyflakes and co"
+description = "the modular source code checker: pep8 pyflakes and co"
 name = "flake8"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.7.9"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "3.8.2"
 
 [package.dependencies]
-entrypoints = ">=0.3.0,<0.4.0"
 mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.5.0,<2.6.0"
-pyflakes = ">=2.1.0,<2.2.0"
+pycodestyle = ">=2.6.0a1,<2.7.0"
+pyflakes = ">=2.2.0,<2.3.0"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
 
 [[package]]
 category = "dev"
@@ -278,7 +273,7 @@ description = "Python style guide checker"
 name = "pycodestyle"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.5.0"
+version = "2.6.0"
 
 [[package]]
 category = "main"
@@ -304,7 +299,7 @@ description = "passive checker of Python programs"
 name = "pyflakes"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "2.1.1"
+version = "2.2.0"
 
 [[package]]
 category = "dev"
@@ -582,13 +577,9 @@ deepdiff = [
     {file = "deepdiff-4.3.2-py3-none-any.whl", hash = "sha256:59fc1e3e7a28dd0147b0f2b00e3e27181f0f0ef4286b251d5f214a5bcd9a9bc4"},
     {file = "deepdiff-4.3.2.tar.gz", hash = "sha256:91360be1d9d93b1d9c13ae9c5048fa83d9cff17a88eb30afaa0d7ff2d0fee17d"},
 ]
-entrypoints = [
-    {file = "entrypoints-0.3-py2.py3-none-any.whl", hash = "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19"},
-    {file = "entrypoints-0.3.tar.gz", hash = "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"},
-]
 flake8 = [
-    {file = "flake8-3.7.9-py2.py3-none-any.whl", hash = "sha256:49356e766643ad15072a789a20915d3c91dc89fd313ccd71802303fd67e4deca"},
-    {file = "flake8-3.7.9.tar.gz", hash = "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb"},
+    {file = "flake8-3.8.2-py2.py3-none-any.whl", hash = "sha256:ccaa799ef9893cebe69fdfefed76865aeaefbb94cb8545617b2298786a4de9a5"},
+    {file = "flake8-3.8.2.tar.gz", hash = "sha256:c69ac1668e434d37a2d2880b3ca9aafd54b3a10a3ac1ab101d22f29e29cf8634"},
 ]
 idna = [
     {file = "idna-2.8-py2.py3-none-any.whl", hash = "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c"},
@@ -680,8 +671,8 @@ py = [
     {file = "py-1.8.0.tar.gz", hash = "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"},
 ]
 pycodestyle = [
-    {file = "pycodestyle-2.5.0-py2.py3-none-any.whl", hash = "sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56"},
-    {file = "pycodestyle-2.5.0.tar.gz", hash = "sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"},
+    {file = "pycodestyle-2.6.0-py2.py3-none-any.whl", hash = "sha256:2295e7b2f6b5bd100585ebcb1f616591b652db8a741695b3d8f5d28bdc934367"},
+    {file = "pycodestyle-2.6.0.tar.gz", hash = "sha256:c58a7d2815e0e8d7972bf1803331fb0152f867bd89adf8a01dfd55085434192e"},
 ]
 pydantic = [
     {file = "pydantic-1.5.1-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:2a6904e9f18dea58f76f16b95cba6a2f20b72d787abd84ecd67ebc526e61dce6"},
@@ -703,8 +694,8 @@ pydantic = [
     {file = "pydantic-1.5.1.tar.gz", hash = "sha256:f0018613c7a0d19df3240c2a913849786f21b6539b9f23d85ce4067489dfacfa"},
 ]
 pyflakes = [
-    {file = "pyflakes-2.1.1-py2.py3-none-any.whl", hash = "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0"},
-    {file = "pyflakes-2.1.1.tar.gz", hash = "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"},
+    {file = "pyflakes-2.2.0-py2.py3-none-any.whl", hash = "sha256:0d94e0e05a19e57a99444b6ddcf9a6eb2e5c68d3ca1e98e90707af8152c90a92"},
+    {file = "pyflakes-2.2.0.tar.gz", hash = "sha256:35b2d75ee967ea93b55750aa9edbbf72813e06a66ba54438df2cfac9e3c27fc8"},
 ]
 pyparsing = [
     {file = "pyparsing-2.4.2-py2.py3-none-any.whl", hash = "sha256:d9338df12903bbf5d65a0e4e87c2161968b10d2e489652bb47001d82a9b028b4"},