diff --git a/poetry.lock b/poetry.lock
index 89df9082..2f30b8f4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -191,6 +191,14 @@ d = ["aiohttp (>=3.6.0)", "aiohttp-cors (>=0.4.0)"]
 python2 = ["typed-ast (>=1.4.2)"]
 uvloop = ["uvloop (>=0.15.2)"]
 
+[[package]]
+name = "certifi"
+version = "2021.5.30"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "main"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "cfgv"
 version = "3.3.0"
@@ -255,7 +263,7 @@ python-versions = "*"
 
 [[package]]
 name = "docutils"
-version = "0.17.1"
+version = "0.16"
 description = "Docutils -- Python Documentation Utilities"
 category = "main"
 optional = false
@@ -325,11 +333,11 @@ license = ["editdistance-s"]
 
 [[package]]
 name = "idna"
-version = "3.2"
+version = "2.10"
 description = "Internationalized Domain Names in Applications (IDNA)"
 category = "main"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "imagesize"
@@ -873,14 +881,20 @@ python-versions = "*"
 
 [[package]]
 name = "requests"
-version = "2.15.1"
+version = "2.25.1"
 description = "Python HTTP for Humans."
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+chardet = ">=3.0.2,<5"
+idna = ">=2.5,<3"
+urllib3 = ">=1.21.1,<1.27"
 
 [package.extras]
-security = ["cryptography (>=1.3.4)", "idna (>=2.0.0)", "pyOpenSSL (>=0.14)"]
+security = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)"]
 socks = ["PySocks (>=1.5.6,!=1.5.7)", "win-inet-pton"]
 
 [[package]]
@@ -909,7 +923,7 @@ python-versions = ">=3.6"
 
 [[package]]
 name = "sphinx"
-version = "3.5.3"
+version = "3.5.4"
 description = "Python documentation generator"
 category = "main"
 optional = false
@@ -919,7 +933,7 @@ python-versions = ">=3.5"
 alabaster = ">=0.7,<0.8"
 babel = ">=1.3"
 colorama = {version = ">=0.3.5", markers = "sys_platform == \"win32\""}
-docutils = ">=0.12"
+docutils = ">=0.12,<0.17"
 imagesize = "*"
 Jinja2 = ">=2.3"
 packaging = "*"
@@ -1129,6 +1143,19 @@ category = "main"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "urllib3"
+version = "1.26.5"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+category = "main"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+
+[package.extras]
+brotli = ["brotlipy (>=0.6.0)"]
+secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
+
 [[package]]
 name = "uvloop"
 version = "0.15.2"
@@ -1307,6 +1334,10 @@ black = [
     {file = "black-21.6b0-py3-none-any.whl", hash = "sha256:dfb8c5a069012b2ab1e972e7b908f5fb42b6bbabcba0a788b86dc05067c7d9c7"},
     {file = "black-21.6b0.tar.gz", hash = "sha256:dc132348a88d103016726fe360cb9ede02cecf99b76e3660ce6c596be132ce04"},
 ]
+certifi = [
+    {file = "certifi-2021.5.30-py2.py3-none-any.whl", hash = "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"},
+    {file = "certifi-2021.5.30.tar.gz", hash = "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee"},
+]
 cfgv = [
     {file = "cfgv-3.3.0-py2.py3-none-any.whl", hash = "sha256:b449c9c6118fe8cca7fa5e00b9ec60ba08145d281d52164230a69211c5d597a1"},
     {file = "cfgv-3.3.0.tar.gz", hash = "sha256:9e600479b3b99e8af981ecdfc80a0296104ee610cab48a5ae4ffd0b668650eb1"},
@@ -1386,8 +1417,8 @@ distlib = [
     {file = "distlib-0.3.2.zip", hash = "sha256:106fef6dc37dd8c0e2c0a60d3fca3e77460a48907f335fa28420463a6f799736"},
 ]
 docutils = [
-    {file = "docutils-0.17.1-py2.py3-none-any.whl", hash = "sha256:cf316c8370a737a022b72b56874f6602acf974a37a9fba42ec2876387549fc61"},
-    {file = "docutils-0.17.1.tar.gz", hash = "sha256:686577d2e4c32380bb50cbb22f575ed742d58168cee37e99117a854bcd88f125"},
+    {file = "docutils-0.16-py2.py3-none-any.whl", hash = "sha256:0c5b78adfbf7762415433f5515cd5c9e762339e23369dbe8000d84a4bf4ab3af"},
+    {file = "docutils-0.16.tar.gz", hash = "sha256:c2de3a60e9e7d07be26b7f2b00ca0309c207e06c100f9cc2a94931fc75a478fc"},
 ]
 filelock = [
     {file = "filelock-3.0.12-py3-none-any.whl", hash = "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"},
@@ -1410,8 +1441,8 @@ identify = [
     {file = "identify-2.2.10.tar.gz", hash = "sha256:5b41f71471bc738e7b586308c3fca172f78940195cb3bf6734c1e66fdac49306"},
 ]
 idna = [
-    {file = "idna-3.2-py3-none-any.whl", hash = "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a"},
-    {file = "idna-3.2.tar.gz", hash = "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"},
+    {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
+    {file = "idna-2.10.tar.gz", hash = "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6"},
 ]
 imagesize = [
     {file = "imagesize-1.2.0-py2.py3-none-any.whl", hash = "sha256:6965f19a6a2039c7d48bca7dba2473069ff854c36ae6f19d2cde309d998228a1"},
@@ -1773,8 +1804,8 @@ regex = [
     {file = "regex-2021.4.4.tar.gz", hash = "sha256:52ba3d3f9b942c49d7e4bc105bb28551c44065f139a65062ab7912bef10c9afb"},
 ]
 requests = [
-    {file = "requests-2.15.1-py2.py3-none-any.whl", hash = "sha256:ff753b2196cd18b1bbeddc9dcd5c864056599f7a7d9a4fb5677e723efa2b7fb9"},
-    {file = "requests-2.15.1.tar.gz", hash = "sha256:e5659b9315a0610505e050bb7190bf6fa2ccee1ac295f2b760ef9d8a03ebbb2e"},
+    {file = "requests-2.25.1-py2.py3-none-any.whl", hash = "sha256:c210084e36a42ae6b9219e00e48287def368a26d03a048ddad7bfee44f75871e"},
+    {file = "requests-2.25.1.tar.gz", hash = "sha256:27973dd4a904a4f13b263a19c866c13b92a39ed1c964655f025f3f8d3d75b804"},
 ]
 six = [
     {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
@@ -1789,8 +1820,8 @@ soupsieve = [
     {file = "soupsieve-2.2.1.tar.gz", hash = "sha256:052774848f448cf19c7e959adf5566904d525f33a3f8b6ba6f6f8f26ec7de0cc"},
 ]
 sphinx = [
-    {file = "Sphinx-3.5.3-py3-none-any.whl", hash = "sha256:3f01732296465648da43dec8fb40dc451ba79eb3e2cc5c6d79005fd98197107d"},
-    {file = "Sphinx-3.5.3.tar.gz", hash = "sha256:ce9c228456131bab09a3d7d10ae58474de562a6f79abb3dc811ae401cf8c1abc"},
+    {file = "Sphinx-3.5.4-py3-none-any.whl", hash = "sha256:2320d4e994a191f4b4be27da514e46b3d6b420f2ff895d064f52415d342461e8"},
+    {file = "Sphinx-3.5.4.tar.gz", hash = "sha256:19010b7b9fa0dc7756a6e105b2aacd3a80f798af3c25c273be64d7beeb482cb1"},
 ]
 sphinx-autobuild = [
     {file = "sphinx-autobuild-2020.9.1.tar.gz", hash = "sha256:4b184a7db893f2100bbd831991ae54ca89167a2b9ce68faea71eaa9e37716aed"},
@@ -1924,6 +1955,10 @@ typing-extensions = [
     {file = "typing_extensions-3.10.0.0-py3-none-any.whl", hash = "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"},
     {file = "typing_extensions-3.10.0.0.tar.gz", hash = "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342"},
 ]
+urllib3 = [
+    {file = "urllib3-1.26.5-py2.py3-none-any.whl", hash = "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c"},
+    {file = "urllib3-1.26.5.tar.gz", hash = "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"},
+]
 uvloop = [
     {file = "uvloop-0.15.2-cp37-cp37m-macosx_10_14_x86_64.whl", hash = "sha256:19fa1d56c91341318ac5d417e7b61c56e9a41183946cc70c411341173de02c69"},
     {file = "uvloop-0.15.2-cp37-cp37m-manylinux2010_x86_64.whl", hash = "sha256:e5e5f855c9bf483ee6cd1eb9a179b740de80cb0ae2988e3fa22309b78e2ea0e7"},