diff --git a/poetry.lock b/poetry.lock
index 453370e..9bdb4bd 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -109,17 +109,6 @@ optional = false
 python-versions = "*"
 version = "2018.10.15"
 
-[[package]]
-category = "dev"
-description = "Foreign Function Interface for Python calling C code."
-name = "cffi"
-optional = true
-python-versions = "*"
-version = "1.11.5"
-
-[package.dependencies]
-pycparser = "*"
-
 [[package]]
 category = "dev"
 description = "Validate configuration and produce human readable error messages."
@@ -192,6 +181,7 @@ websockets = ">=6.0,<7.0"
 reference = "860d6a9ace8248dfeec18b8b159e7b757d9f56bb"
 type = "git"
 url = "https://github.com/Rapptz/discord.py.git"
+
 [[package]]
 category = "dev"
 description = "Docutils -- Python Documentation Utilities"
@@ -258,6 +248,7 @@ version = "1.0"
 [[package]]
 category = "dev"
 description = "More routines for operating on iterables, beyond itertools"
+marker = "python_version > \"2.7\""
 name = "more-itertools"
 optional = false
 python-versions = "*"
@@ -340,14 +331,6 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 version = "1.7.0"
 
-[[package]]
-category = "dev"
-description = "C parser in Python"
-name = "pycparser"
-optional = true
-python-versions = "*"
-version = "2.19"
-
 [[package]]
 category = "dev"
 description = "Pygments is a syntax highlighting package written in Python."
@@ -356,18 +339,6 @@ optional = false
 python-versions = "*"
 version = "2.2.0"
 
-[[package]]
-category = "dev"
-description = "Python binding to the Networking and Cryptography (NaCl) library"
-name = "pynacl"
-optional = true
-python-versions = "*"
-version = "1.2.1"
-
-[package.dependencies]
-cffi = ">=1.4.1"
-six = "*"
-
 [[package]]
 category = "dev"
 description = "Python parsing module"
@@ -382,18 +353,21 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "3.9.1"
+version = "4.3.1"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
-more-itertools = ">=4.0.0"
 pluggy = ">=0.7"
 py = ">=1.5.0"
 setuptools = "*"
 six = ">=1.10.0"
 
+[package.dependencies.more-itertools]
+python = ">2.7"
+version = ">=4.0.0"
+
 [[package]]
 category = "dev"
 description = "Pytest support for asyncio."
@@ -573,7 +547,7 @@ idna = ">=2.0"
 multidict = ">=4.0"
 
 [metadata]
-content-hash = "9baab2b088bc9e686d906a67bb55d02908815205f38deac51c04c40b83d7113b"
+content-hash = "cbc23393f66a21a38bd4ab32154bb39aa42e35690c1e2d34c2b415f1679a41d4"
 python-versions = "^3.6"
 
 [metadata.hashes]
@@ -588,13 +562,12 @@ babel = ["6778d85147d5d85345c14a26aada5e478ab04e39b078b0745ee6870c2b5cf669", "8c
 black = ["817243426042db1d36617910df579a54f1afd659adb96fc5032fcf4b36209739", "e030a9a28f542debc08acceb273f228ac422798e5215ba2a791a6ddeaaca22a5"]
 cached-property = ["3a026f1a54135677e7da5ce819b0c690f156f37976f3e30c5430740725203d7f", "9217a59f14a5682da7c4b8829deadbfc194ac22e9908ccf7c8820234e80a1504"]
 certifi = ["339dc09518b07e2fa7eda5450740925974815557727d6bd35d319c1524a04a4c", "6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a"]
-cffi = ["151b7eefd035c56b2b2e1eb9963c90c6302dc15fbd8c1c0a83a163ff2c7d7743", "1553d1e99f035ace1c0544050622b7bc963374a00c467edafac50ad7bd276aef", "1b0493c091a1898f1136e3f4f991a784437fac3673780ff9de3bcf46c80b6b50", "2ba8a45822b7aee805ab49abfe7eec16b90587f7f26df20c71dd89e45a97076f", "3bb6bd7266598f318063e584378b8e27c67de998a43362e8fce664c54ee52d30", "3c85641778460581c42924384f5e68076d724ceac0f267d66c757f7535069c93", "3eb6434197633b7748cea30bf0ba9f66727cdce45117a712b29a443943733257", "495c5c2d43bf6cebe0178eb3e88f9c4aa48d8934aa6e3cddb865c058da76756b", "4c91af6e967c2015729d3e69c2e51d92f9898c330d6a851bf8f121236f3defd3", "57b2533356cb2d8fac1555815929f7f5f14d68ac77b085d2326b571310f34f6e", "770f3782b31f50b68627e22f91cb182c48c47c02eb405fd689472aa7b7aa16dc", "79f9b6f7c46ae1f8ded75f68cf8ad50e5729ed4d590c74840471fc2823457d04", "7a33145e04d44ce95bcd71e522b478d282ad0eafaf34fe1ec5bbd73e662f22b6", "857959354ae3a6fa3da6651b966d13b0a8bed6bbc87a0de7b38a549db1d2a359", "87f37fe5130574ff76c17cab61e7d2538a16f843bb7bca8ebbc4b12de3078596", "95d5251e4b5ca00061f9d9f3d6fe537247e145a8524ae9fd30a2f8fbce993b5b", "9d1d3e63a4afdc29bd76ce6aa9d58c771cd1599fbba8cf5057e7860b203710dd", "a36c5c154f9d42ec176e6e620cb0dd275744aa1d804786a71ac37dc3661a5e95", "a6a5cb8809091ec9ac03edde9304b3ad82ad4466333432b16d78ef40e0cce0d5", "ae5e35a2c189d397b91034642cb0eab0e346f776ec2eb44a49a459e6615d6e2e", "b0f7d4a3df8f06cf49f9f121bead236e328074de6449866515cea4907bbc63d6", "b75110fb114fa366b29a027d0c9be3709579602ae111ff61674d28c93606acca", "ba5e697569f84b13640c9e193170e89c13c6244c24400fc57e88724ef610cd31", "be2a9b390f77fd7676d80bc3cdc4f8edb940d8c198ed2d8c0be1319018c778e1", "ca1bd81f40adc59011f58159e4aa6445fc585a32bb8ac9badf7a2c1aa23822f2", "d5d8555d9bfc3f02385c1c37e9f998e2011f0db4f90e250e5bc0c0a85a813085", "e55e22ac0a30023426564b1059b035973ec82186ddddbac867078435801c7801", "e90f17980e6ab0f3c2f3730e56d1fe9bcba1891eeea58966e89d352492cc74f4", "ecbb7b01409e9b782df5ded849c178a0aa7c906cf8c5a67368047daab282b184", "ed01918d545a38998bfa5902c7c00e0fee90e957ce036a4000a88e3fe2264917", "edabd457cd23a02965166026fd9bfd196f4324fe6032e866d0f3bd0301cd486f", "fdf1c1dc5bafc32bc5d08b054f94d659422b05aba244d6be4ddc1c72d9aa70fb"]
 cfgv = ["73f48a752bd7aab103c4b882d6596c6360b7aa63b34073dd2c35c7b4b8f93010", "d1791caa9ff5c0c7bce80e7ecc1921752a2eb7c2463a08ed9b6c96b85a2f75aa"]
 chardet = ["84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae", "fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"]
 click = ["2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13", "5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7"]
 codecov = ["8ed8b7c6791010d359baed66f84f061bba5bd41174bf324c31311e8737602788", "ae00d68e18d8a20e9c3288ba3875ae03db3a8e892115bf9b83ef20507732bed4"]
 colorama = ["a3d89af5db9e9806a779a50296b5fdb466e281147c2c235e8225ecc6dbf7bbf3", "c9b54bebe91a6a803e0772c8561d53f2926bfeb17cd141fbabcb08424086595c"]
-coverage = ["03481e81d558d30d230bc12999e3edffe392d244349a90f4ef9b88425fac74ba", "0b136648de27201056c1869a6c0d4e23f464750fd9a9ba9750b8336a244429ed", "104ab3934abaf5be871a583541e8829d6c19ce7bde2923b2751e0d3ca44db60a", "10a46017fef60e16694a30627319f38a2b9b52e90182dddb6e37dcdab0f4bf95", "15b111b6a0f46ee1a485414a52a7ad1d703bdf984e9ed3c288a4414d3871dcbd", "198626739a79b09fa0a2f06e083ffd12eb55449b5f8bfdbeed1df4910b2ca640", "1c383d2ef13ade2acc636556fd544dba6e14fa30755f26812f54300e401f98f2", "23d341cdd4a0371820eb2b0bd6b88f5003a7438bbedb33688cd33b8eae59affd", "28b2191e7283f4f3568962e373b47ef7f0392993bb6660d079c62bd50fe9d162", "2a5b73210bad5279ddb558d9a2bfedc7f4bf6ad7f3c988641d83c40293deaec1", "2eb564bbf7816a9d68dd3369a510be3327f1c618d2357fa6b1216994c2e3d508", "337ded681dd2ef9ca04ef5d93cfc87e52e09db2594c296b4a0a3662cb1b41249", "3a2184c6d797a125dca8367878d3b9a178b6fdd05fdc2d35d758c3006a1cd694", "3c79a6f7b95751cdebcd9037e4d06f8d5a9b60e4ed0cd231342aa8ad7124882a", "3d72c20bd105022d29b14a7d628462ebdc61de2f303322c0212a054352f3b287", "3eb42bf89a6be7deb64116dd1cc4b08171734d721e7a7e57ad64cc4ef29ed2f1", "4635a184d0bbe537aa185a34193898eee409332a8ccb27eea36f262566585000", "56e448f051a201c5ebbaa86a5efd0ca90d327204d8b059ab25ad0f35fbfd79f1", "5a13ea7911ff5e1796b6d5e4fbbf6952381a611209b736d48e675c2756f3f74e", "69bf008a06b76619d3c3f3b1983f5145c75a305a0fea513aca094cae5c40a8f5", "6bc583dc18d5979dc0f6cec26a8603129de0304d5ae1f17e57a12834e7235062", "701cd6093d63e6b8ad7009d8a92425428bc4d6e7ab8d75efbb665c806c1d79ba", "7608a3dd5d73cb06c531b8925e0ef8d3de31fed2544a7de6c63960a1e73ea4bc", "76ecd006d1d8f739430ec50cc872889af1f9c1b6b8f48e29941814b09b0fd3cc", "7aa36d2b844a3e4a4b356708d79fd2c260281a7390d678a10b91ca595ddc9e99", "7d3f553904b0c5c016d1dad058a7554c7ac4c91a789fca496e7d8347ad040653", "7e1fe19bd6dce69d9fd159d8e4a80a8f52101380d5d3a4d374b6d3eae0e5de9c", "8c3cb8c35ec4d9506979b4cf90ee9918bc2e49f84189d9bf5c36c0c1119c6558", "9d6dd10d49e01571bf6e147d3b505141ffc093a06756c60b053a859cb2128b1f", "9e112fcbe0148a6fa4f0a02e8d58e94470fc6cb82a5481618fea901699bf34c4", "ac4fef68da01116a5c117eba4dd46f2e06847a497de5ed1d64bb99a5fda1ef91", "b8815995e050764c8610dbc82641807d196927c3dbed207f0a079833ffcf588d", "be6cfcd8053d13f5f5eeb284aa8a814220c3da1b0078fa859011c7fffd86dab9", "c1bb572fab8208c400adaf06a8133ac0712179a334c09224fb11393e920abcdd", "de4418dadaa1c01d497e539210cb6baa015965526ff5afc078c57ca69160108d", "e05cb4d9aad6233d67e0541caa7e511fa4047ed7750ec2510d466e806e0255d6", "e4d96c07229f58cb686120f168276e434660e4358cc9cf3b0464210b04913e77", "f3f501f345f24383c0000395b26b726e46758b71393267aeae0bd36f8b3ade80", "f8a923a85cb099422ad5a2e345fe877bbc89a8a8b23235824a93488150e45f6e"]
+coverage = ["03481e81d558d30d230bc12999e3edffe392d244349a90f4ef9b88425fac74ba", "0b136648de27201056c1869a6c0d4e23f464750fd9a9ba9750b8336a244429ed", "0bf8cbbd71adfff0ef1f3a1531e6402d13b7b01ac50a79c97ca15f030dba6306", "104ab3934abaf5be871a583541e8829d6c19ce7bde2923b2751e0d3ca44db60a", "10a46017fef60e16694a30627319f38a2b9b52e90182dddb6e37dcdab0f4bf95", "15b111b6a0f46ee1a485414a52a7ad1d703bdf984e9ed3c288a4414d3871dcbd", "198626739a79b09fa0a2f06e083ffd12eb55449b5f8bfdbeed1df4910b2ca640", "1c383d2ef13ade2acc636556fd544dba6e14fa30755f26812f54300e401f98f2", "23d341cdd4a0371820eb2b0bd6b88f5003a7438bbedb33688cd33b8eae59affd", "28b2191e7283f4f3568962e373b47ef7f0392993bb6660d079c62bd50fe9d162", "2a5b73210bad5279ddb558d9a2bfedc7f4bf6ad7f3c988641d83c40293deaec1", "2eb564bbf7816a9d68dd3369a510be3327f1c618d2357fa6b1216994c2e3d508", "337ded681dd2ef9ca04ef5d93cfc87e52e09db2594c296b4a0a3662cb1b41249", "3a2184c6d797a125dca8367878d3b9a178b6fdd05fdc2d35d758c3006a1cd694", "3c79a6f7b95751cdebcd9037e4d06f8d5a9b60e4ed0cd231342aa8ad7124882a", "3d72c20bd105022d29b14a7d628462ebdc61de2f303322c0212a054352f3b287", "3eb42bf89a6be7deb64116dd1cc4b08171734d721e7a7e57ad64cc4ef29ed2f1", "4635a184d0bbe537aa185a34193898eee409332a8ccb27eea36f262566585000", "56e448f051a201c5ebbaa86a5efd0ca90d327204d8b059ab25ad0f35fbfd79f1", "5a13ea7911ff5e1796b6d5e4fbbf6952381a611209b736d48e675c2756f3f74e", "69bf008a06b76619d3c3f3b1983f5145c75a305a0fea513aca094cae5c40a8f5", "6bc583dc18d5979dc0f6cec26a8603129de0304d5ae1f17e57a12834e7235062", "701cd6093d63e6b8ad7009d8a92425428bc4d6e7ab8d75efbb665c806c1d79ba", "7608a3dd5d73cb06c531b8925e0ef8d3de31fed2544a7de6c63960a1e73ea4bc", "76ecd006d1d8f739430ec50cc872889af1f9c1b6b8f48e29941814b09b0fd3cc", "7aa36d2b844a3e4a4b356708d79fd2c260281a7390d678a10b91ca595ddc9e99", "7d3f553904b0c5c016d1dad058a7554c7ac4c91a789fca496e7d8347ad040653", "7e1fe19bd6dce69d9fd159d8e4a80a8f52101380d5d3a4d374b6d3eae0e5de9c", "8c3cb8c35ec4d9506979b4cf90ee9918bc2e49f84189d9bf5c36c0c1119c6558", "9d6dd10d49e01571bf6e147d3b505141ffc093a06756c60b053a859cb2128b1f", "9e112fcbe0148a6fa4f0a02e8d58e94470fc6cb82a5481618fea901699bf34c4", "ac4fef68da01116a5c117eba4dd46f2e06847a497de5ed1d64bb99a5fda1ef91", "b8815995e050764c8610dbc82641807d196927c3dbed207f0a079833ffcf588d", "be6cfcd8053d13f5f5eeb284aa8a814220c3da1b0078fa859011c7fffd86dab9", "c1bb572fab8208c400adaf06a8133ac0712179a334c09224fb11393e920abcdd", "de4418dadaa1c01d497e539210cb6baa015965526ff5afc078c57ca69160108d", "e05cb4d9aad6233d67e0541caa7e511fa4047ed7750ec2510d466e806e0255d6", "e4d96c07229f58cb686120f168276e434660e4358cc9cf3b0464210b04913e77", "f05a636b4564104120111800021a92e43397bc12a5c72fed7036be8556e0029e", "f3f501f345f24383c0000395b26b726e46758b71393267aeae0bd36f8b3ade80", "f8a923a85cb099422ad5a2e345fe877bbc89a8a8b23235824a93488150e45f6e"]
 "discord.py" = []
 docutils = ["02aec4bd92ab067f6ff27a38a38a41173bf01bed8f89157768c1573f53e474a6", "51e64ef2ebfb29cae1faa133b3710143496eca21c530f3f71424d77687764274", "7a4bd47eaf6596e1295ecb11361139febe29b084a87bf005bf899f9a42edc3c6"]
 identify = ["5e956558a9a1e3b3891d7c6609fc9709657a11878af288ace484d1a46a93922b", "623086059219cc7b86c77a3891f3700cb175d4ce02b8fb8802b047301d71e783"]
@@ -605,17 +578,15 @@ jinja2 = ["74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd", "f
 markupsafe = ["a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"]
 more-itertools = ["c187a73da93e7a8acc0001572aebc7e3c69daf7bf6881a2cea10650bd4420092", "c476b5d3a34e12d40130bc2f935028b5f636df8f372dc2c1c01dc19681b2039e", "fcbfeaea0be121980e15bc97b3817b5202ca73d0eae185b4550cbfce2a3ebb3d"]
 multidict = ["05eeab69bf2b0664644c62bd92fabb045163e5b8d4376a31dfb52ce0210ced7b", "0c85880efa7cadb18e3b5eef0aa075dc9c0a3064cbbaef2e20be264b9cf47a64", "136f5a4a6a4adeacc4dc820b8b22f0a378fb74f326e259c54d1817639d1d40a0", "14906ad3347c7d03e9101749b16611cf2028547716d0840838d3c5e2b3b0f2d3", "1ade4a3b71b1bf9e90c5f3d034a87fe4949c087ef1f6cd727fdd766fe8bbd121", "22939a00a511a59f9ecc0158b8db728afef57975ce3782b3a265a319d05b9b12", "2b86b02d872bc5ba5b3a4530f6a7ba0b541458ab4f7c1429a12ac326231203f7", "3c11e92c3dfc321014e22fb442bc9eb70e01af30d6ce442026b0c35723448c66", "4ba3bd26f282b201fdbce351f1c5d17ceb224cbedb73d6e96e6ce391b354aacc", "4c6e78d042e93751f60672989efbd6a6bc54213ed7ff695fff82784bbb9ea035", "4d80d1901b89cc935a6cf5b9fd89df66565272722fe2e5473168927a9937e0ca", "4fcf71d33178a00cc34a57b29f5dab1734b9ce0f1c97fb34666deefac6f92037", "52f7670b41d4b4d97866ebc38121de8bcb9813128b7c4942b07794d08193c0ab", "5368e2b7649a26b7253c6c9e53241248aab9da49099442f5be238fde436f18c9", "5bb65fbb48999044938f0c0508e929b14a9b8bf4939d8263e9ea6691f7b54663", "60672bb5577472800fcca1ac9dae232d1461db9f20f055184be8ce54b0052572", "669e9be6d148fc0283f53e17dd140cde4dc7c87edac8319147edd5aa2a830771", "6a0b7a804e8d1716aa2c72e73210b48be83d25ba9ec5cf52cf91122285707bb1", "79034ea3da3cf2a815e3e52afdc1f6c1894468c98bdce5d2546fa2342585497f", "79247feeef6abcc11137ad17922e865052f23447152059402fc320f99ff544bb", "81671c2049e6bf42c7fd11a060f8bc58f58b7b3d6f3f951fc0b15e376a6a5a98", "82ac4a5cb56cc9280d4ae52c2d2ebcd6e0668dd0f9ef17f0a9d7c82bd61e24fa", "9436267dbbaa49dad18fbbb54f85386b0f5818d055e7b8e01d219661b6745279", "94e4140bb1343115a1afd6d84ebf8fca5fb7bfb50e1c2cbd6f2fb5d3117ef102", "a2cab366eae8a0ffe0813fd8e335cf0d6b9bb6c5227315f53bb457519b811537", "a596019c3eafb1b0ae07db9f55a08578b43c79adb1fe1ab1fd818430ae59ee6f", "e8848ae3cd6a784c29fae5055028bee9bffcc704d8bcad09bd46b42b44a833e2", "e8a048bfd7d5a280f27527d11449a509ddedf08b58a09a24314828631c099306", "f6dd28a0ac60e2426a6918f36f1b4e2620fc785a0de7654cd206ba842eee57fd"]
-nodeenv = ["aa040ab5189bae17d272175609010be6c5b589ec4b8dbd832cc50c9e9cb7496f"]
+nodeenv = ["7798cb19d638c29586ef7f2018f51866fd85dabe97817dd5c9becb8a57ee7d8d", "aa040ab5189bae17d272175609010be6c5b589ec4b8dbd832cc50c9e9cb7496f"]
 packaging = ["0886227f54515e592aaa2e5a553332c73962917f2831f1b0f9b9f4380a4b9807", "f95a1e147590f204328170981833854229bb2912ac3d5f89e2a8ccd2834800c9"]
 pluggy = ["447ba94990e8014ee25ec853339faf7b0fc8050cdc3289d4d71f7f410fb90095", "bde19360a8ec4dfd8a20dcb811780a30998101f078fc7ded6162f0076f50508f"]
 pockets = ["109eb91588e9cf722de98c98d300e1c5896e877f5704dc61176fa09686ca635b", "21a2405543c439ac091453ed187f558cf5294d3f85f15310f214ad4de057e0af"]
 pre-commit = ["98ec318db1f255e3d5089ae416959ef3c775215a3509620027d446eeabbba740", "b68f9219c56b50ebafb57f378c5325f9876d06fb29e9cd05daf5cbd6676ce8f2"]
 py = ["bf92637198836372b520efcba9e020c330123be8ce527e535d185ed4b6f45694", "e76826342cefe3c3d5f7e8ee4316b80d1dd8a300781612ddbc765c17ba25a6c6"]
-pycparser = ["a988718abfad80b6b157acce7bf130a30876d27603738ac39f140993246b25b3"]
 pygments = ["78f3f434bcc5d6ee09020f92ba487f95ba50f1e3ef83ae96b9d5ffa1bab25c5d", "dbae1046def0efb574852fab9e90209b23f556367b5a320c0bcb871c77c3e8cc"]
-pynacl = ["04e30e5bdeeb2d5b34107f28cd2f5bbfdc6c616f3be88fc6f53582ff1669eeca", "0bfa0d94d2be6874e40f896e0a67e290749151e7de767c5aefbad1121cad7512", "11aa4e141b2456ce5cecc19c130e970793fa3a2c2e6fbb8ad65b28f35aa9e6b6", "13bdc1fe084ff9ac7653ae5a924cae03bf4bb07c6667c9eb5b6eb3c570220776", "14339dc233e7a9dda80a3800e64e7ff89d0878ba23360eea24f1af1b13772cac", "1d33e775fab3f383167afb20b9927aaf4961b953d76eeb271a5703a6d756b65b", "2a42b2399d0428619e58dac7734838102d35f6dcdee149e0088823629bf99fbb", "2dce05ac8b3c37b9e2f65eab56c544885607394753e9613fd159d5e2045c2d98", "63cfccdc6217edcaa48369191ae4dca0c390af3c74f23c619e954973035948cd", "6453b0dae593163ffc6db6f9c9c1597d35c650598e2c39c0590d1757207a1ac2", "73a5a96fb5fbf2215beee2353a128d382dbca83f5341f0d3c750877a236569ef", "8abb4ef79161a5f58848b30ab6fb98d8c466da21fdd65558ce1d7afc02c70b5f", "8ac1167195b32a8755de06efd5b2d2fe76fc864517dab66aaf65662cc59e1988", "8f505f42f659012794414fa57c498404e64db78f1d98dfd40e318c569f3c783b", "9c8a06556918ee8e3ab48c65574f318f5a0a4d31437fc135da7ee9d4f9080415", "a1e25fc5650cf64f01c9e435033e53a4aca9de30eb9929d099f3bb078e18f8f2", "be71cd5fce04061e1f3d39597f93619c80cdd3558a6c9ba99a546f144a8d8101", "c5b1a7a680218dee9da0f1b5e24072c46b3c275d35712bc1d505b85bb03441c0", "cb785db1a9468841a1265c9215c60fe5d7af2fb1b209e3316a152704607fc582", "cf6877124ae6a0698404e169b3ba534542cfbc43f939d46b927d956daf0a373a", "d0eb5b2795b7ee2cbcfcadacbe95a13afbda048a262bd369da9904fecb568975", "d3a934e2b9f20abac009d5b6951067cfb5486889cb913192b4d8288b216842f1", "d795f506bcc9463efb5ebb0f65ed77921dcc9e0a50499dedd89f208445de9ecb", "d8aaf7e5d6b0e0ef7d6dbf7abeb75085713d0100b4eb1a4e4e857de76d77ac45", "de2aaca8386cf4d70f1796352f2346f48ddb0bed61dc43a3ce773ba12e064031", "e0d38fa0a75f65f556fb912f2c6790d1fa29b7dd27a1d9cc5591b281321eaaa9", "eb2acabbd487a46b38540a819ef67e477a674481f84a82a7ba2234b9ba46f752", "eeee629828d0eb4f6d98ac41e9a3a6461d114d1d0aa111a8931c049359298da0", "f5836463a3c0cca300295b229b6c7003c415a9d11f8f9288ddbd728e2746524c", "f5ce9e26d25eb0b2d96f3ef0ad70e1d3ae89b5d60255c462252a3e456a48c053", "fabf73d5d0286f9e078774f3435601d2735c94ce9e514ac4fb945701edead7e4"]
 pyparsing = ["bc6c7146b91af3f567cf6daeaec360bc07d45ffec4cf5353f4d7a208ce7ca30a", "d29593d8ebe7b57d6967b62494f8c72b03ac0262b1eed63826c6f788b3606401"]
-pytest = ["10e59f84267370ab20cec9305bafe7505ba4d6b93ecbf66a1cce86193ed511d5", "8c827e7d4816dfe13e9329c8226aef8e6e75d65b939bc74fda894143b6d1df59"]
+pytest = ["592eaa2c33fae68c7d75aacf042efc9f77b27c08a6224a4f59beab8d9a420523", "ad3ad5c450284819ecde191a654c09b0ec72257a2c711b9633d677c71c9850c4"]
 pytest-asyncio = ["a962e8e1b6ec28648c8fe214edab4e16bacdb37b52df26eb9d63050af309b2a9", "fbd92c067c16111174a1286bfb253660f1e564e5146b39eeed1133315cf2c2cf"]
 pytest-cov = ["513c425e931a0344944f84ea47f3956be0e416d95acbd897a44970c8d926d5d7", "e360f048b7dae3f2f2a9a4d067b2dd6b6a015d384d1577c994a43f3f7cbad762"]
 pytz = ["a061aa0a9e06881eb8b3b2b43f05b9439d6583c206d0a6c340ff72a7b6669053", "ffb9ef1de172603304d9d2819af6f5ece76f2e85ec10692a524dd876e72bf277"]
diff --git a/pyproject.toml b/pyproject.toml
index f1e2157..55816db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ black = "^18.9b0"
 codecov = "^2.0"
 coverage = "^4.5"
 pre-commit = "^1.11"
-pytest = "^3.8"
+pytest = "^4.3"
 pytest-asyncio = "^0.9.0"
 pytest-cov = "^2.5"
 sphinx = "^1.7"