diff --git a/poetry.lock b/poetry.lock
index 8ef126fa..99c48c6b 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -151,14 +151,6 @@ optional = false
 python-versions = "*"
 version = "0.6"
 
-[[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 = "main"
 description = "FastAPI framework, high performance, easy to learn, fast to code, ready for production"
@@ -179,17 +171,20 @@ test = ["pytest (>=4.0.0)", "pytest-cov", "mypy", "black", "isort", "requests",
 
 [[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 = "3.8.3"
 
 [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"
@@ -458,7 +453,7 @@ 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"
@@ -484,7 +479,7 @@ 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"
@@ -812,17 +807,13 @@ dataclasses = [
     {file = "dataclasses-0.6-py3-none-any.whl", hash = "sha256:454a69d788c7fda44efd71e259be79577822f5e3f53f029a22d08004e951dc9f"},
     {file = "dataclasses-0.6.tar.gz", hash = "sha256:6988bd2b895eef432d562370bb707d540f32f7360ab13da45340101bc2307d84"},
 ]
-entrypoints = [
-    {file = "entrypoints-0.3-py2.py3-none-any.whl", hash = "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19"},
-    {file = "entrypoints-0.3.tar.gz", hash = "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"},
-]
 fastapi = [
     {file = "fastapi-0.52.0-py3-none-any.whl", hash = "sha256:532648b4e16dd33673d71dc0b35dff1b4d20c709d04078010e258b9f3a79771a"},
     {file = "fastapi-0.52.0.tar.gz", hash = "sha256:721b11d8ffde52c669f52741b6d9d761fe2e98778586f4cfd6f5e47254ba5016"},
 ]
 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 = "flake8-3.8.3-py2.py3-none-any.whl", hash = "sha256:15e351d19611c887e482fb960eae4d44845013cc142d42896e9862f775d8cf5c"},
+    {file = "flake8-3.8.3.tar.gz", hash = "sha256:f04b9fcbac03b0a3e58c0ab3a0ecc462e023a9faf046d57794184028123aa208"},
 ]
 future = [
     {file = "future-0.18.2.tar.gz", hash = "sha256:b1bead90b70cf6ec3f0710ae53a525360fa360d306a86583adc6bf83a4db537d"},
@@ -950,8 +941,8 @@ py = [
     {file = "py-1.8.1.tar.gz", hash = "sha256:5e27081401262157467ad6e7f851b7aa402c5852dbcb3dae06768434de5752aa"},
 ]
 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-1.4-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:07911aab70f3bc52bb845ce1748569c5e70478ac977e106a150dd9d0465ebf04"},
@@ -970,8 +961,8 @@ pydantic = [
     {file = "pydantic-1.4.tar.gz", hash = "sha256:f17ec336e64d4583311249fb179528e9a2c27c8a2eaf590ec6ec2c6dece7cb3f"},
 ]
 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"},
 ]
 pygments = [
     {file = "Pygments-2.5.2-py2.py3-none-any.whl", hash = "sha256:2a3fe295e54a20164a9df49c75fa58526d3be48e14aceba6d6b1e8ac0bfd6f1b"},