diff --git a/poetry.lock b/poetry.lock
index 6595a27..708fe80 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -631,10 +631,10 @@ description = "Optional static typing for Python"
 name = "mypy"
 optional = false
 python-versions = ">=3.5"
-version = "0.750"
+version = "0.760"
 
 [package.dependencies]
-mypy-extensions = ">=0.4.0,<0.5.0"
+mypy-extensions = ">=0.4.3,<0.5.0"
 typed-ast = ">=1.4.0,<1.5.0"
 typing-extensions = ">=3.7.4"
 
@@ -1173,7 +1173,7 @@ version = "0.6.0"
 more-itertools = "*"
 
 [metadata]
-content-hash = "273310a4cab1a20ab8c6e59276cd35c956bbed75196356730e6f0b4ad94c6bca"
+content-hash = "c2537c6227e9b7ec947203dc364bacf43ec2d0ae3dce1ce1fb8afcdd9ac3b252"
 python-versions = "^3.6"
 
 [metadata.hashes]
@@ -1238,7 +1238,7 @@ marshmallow-polyfield = ["963a01e80bca5cb4da42b8d2f7e6e90946257ae22d22ff2ed104a8
 mccabe = ["ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42", "dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"]
 mistune = ["59a3429db53c50b5c6bcc8a07f8848cb00d7dc8bdb431a4ab41920d201d4756e", "88a1051873018da288eee8538d476dffe1262495144b33ecb586c4ab266bb8d4"]
 more-itertools = ["53ff73f186307d9c8ef17a9600309154a6ae27f25579e80af4db8f047ba14bc2", "a0ea684c39bc4315ba7aae406596ef191fd84f873d2d2751f84d64e81a7a2d45"]
-mypy = ["02d9bdd3398b636723ecb6c5cfe9773025a9ab7f34612c1cde5c7f2292e2d768", "088f758a50af31cf8b42688118077292370c90c89232c783ba7979f39ea16646", "28e9fbc96d13397a7ddb7fad7b14f373f91b5cff538e0772e77c270468df083c", "30e123b24931f02c5d99307406658ac8f9cd6746f0d45a3dcac2fe5fbdd60939", "3294821b5840d51a3cd7a2bb63b40fc3f901f6a3cfb3c6046570749c4c7ef279", "41696a7d912ce16fdc7c141d87e8db5144d4be664a0c699a2b417d393994b0c2", "4f42675fa278f3913340bb8c3371d191319704437758d7c4a8440346c293ecb2", "54d205ccce6ed930a8a2ccf48404896d456e8b87812e491cb907a355b1a9c640", "6992133c95a2847d309b4b0c899d7054adc60481df6f6b52bb7dee3d5fd157f7", "6ecbd0e8e371333027abca0922b0c2c632a5b4739a0c61ffbd0733391e39144c", "83fa87f556e60782c0fc3df1b37b7b4a840314ba1ac27f3e1a1e10cb37c89c17", "c87ac7233c629f305602f563db07f5221950fe34fe30af072ac838fa85395f78", "de9ec8dba773b78c49e7bec9a35c9b6fc5235682ad1fc2105752ae7c22f4b931", "f385a0accf353ca1bca4bbf473b9d83ed18d923fdb809d3a70a385da23e25b6a"]
+mypy = ["0308c35fd16c96a81b8dfc4d09ec63b8fa607cfec087acf5aafb44c2c45197de", "39f7be2f89668d21b2bbab45ce5aa15e69bf8d6f3b46f9e1cc1a88e4fcc84f3d", "4223f576813c79a10d0fd14192c86f1b85e3bd235c93792f22ed811a20b5ee4e", "4c8f812a2fbefa96185933fbe05aa035e9cf791cf3a23bbdb6a219c80b60e0b1", "4ea9ee847ea5bb38ea275441f3aea7eeba1b96187a3f968ee359d33d9dcc0eda", "573c68df69f0e399fa57866a0b72989acf0a56c4008eee59c789c2ca5ea9df03", "588c0e38466306aa7dbe6522ceacf37dde8b13cfa5edde90be2ce382f078875f", "6d1bd2e675823a19e6bf72149540ab9851bfe698b796aea698fb926ab2bedd02", "aa8e3bd1540dd5c39ef580ec2146a9c99c45f7c62af890095fec9e87b5ca19fb", "b978ba1ea90d0abe2fc720ec9a41824b7d3a1304569bd58c9038d8d61dc4dfdb", "c85c5367c2e8247e06cc0aba84e3633e90f48e8a0677bc51b351e138b5ff80b1", "ce69577b424058bfa177df27213869f37c1e964c3e1ebd3b3d54f1d10b234c4d", "ec6eaf98a57624d96d9916352a5bad2d73959f6358fabf43838f7d1a4d2f8389"]
 mypy-extensions = ["090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d", "2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"]
 nitpick = ["934d18423ed503a717f2412280d8cd166d059b135e0be72d94e279cbb45ec586", "ed448ad0dc15e911574ce8fcdacefcf1a7543dac7267d806f0bf06b7e0622553"]
 packaging = ["28b924174df7a2fa32c1953825ff29c61e2f5e082343165438812f00d3a7fc47", "d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"]
@@ -1263,7 +1263,7 @@ radon = ["20f799949e42e6899bc9304539de222d3bdaeec276f38fbd4034859ccd548b46", "32
 requests = ["11e007a8a2aa0323f5a921e9e6a2d7e4e67d9877e85773fba9ba6419025cbeb4", "9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31"]
 restructuredtext-lint = ["97b3da356d5b3a8514d8f1f9098febd8b41463bed6a1d9f126cf0a048b6fd908"]
 "ruamel.yaml" = ["0db639b1b2742dae666c6fc009b8d1931ef15c9276ef31c0673cc6dcf766cf40", "412a6f5cfdc0525dee6a27c08f5415c7fd832a7afcb7a0ed7319628aed23d408"]
-"ruamel.yaml.clib" = ["1e77424825caba5553bbade750cec2277ef130647d685c2b38f68bc03453bac6", "392b7c371312abf27fb549ec2d5e0092f7ef6e6c9f767bfb13e83cb903aca0fd", "4d55386129291b96483edcb93b381470f7cd69f97585829b048a3d758d31210a", "550168c02d8de52ee58c3d8a8193d5a8a9491a5e7b2462d27ac5bf63717574c9", "57933a6986a3036257ad7bf283529e7c19c2810ff24c86f4a0cfeb49d2099919", "615b0396a7fad02d1f9a0dcf9f01202bf9caefee6265198f252c865f4227fcc6", "77556a7aa190be9a2bd83b7ee075d3df5f3c5016d395613671487e79b082d784", "7aee724e1ff424757b5bd8f6c5bbdb033a570b2b4683b17ace4dbe61a99a657b", "8073c8b92b06b572e4057b583c3d01674ceaf32167801fe545a087d7a1e8bf52", "9c6d040d0396c28d3eaaa6cb20152cb3b2f15adf35a0304f4f40a3cf9f1d2448", "a0ff786d2a7dbe55f9544b3f6ebbcc495d7e730df92a08434604f6f470b899c5", "b1b7fcee6aedcdc7e62c3a73f238b3d080c7ba6650cd808bce8d7761ec484070", "b66832ea8077d9b3f6e311c4a53d06273db5dc2db6e8a908550f3c14d67e718c", "d0d3ac228c9bbab08134b4004d748cf9f8743504875b3603b3afbb97e3472947", "d10e9dd744cf85c219bf747c75194b624cc7a94f0c80ead624b06bfa9f61d3bc", "ea4362548ee0cbc266949d8a441238d9ad3600ca9910c3fe4e82ee3a50706973", "ed5b3698a2bb241b7f5cbbe277eaa7fe48b07a58784fba4f75224fd066d253ad", "f9dcc1ae73f36e8059589b601e8e4776b9976effd76c21ad6a855a74318efd6e"]
+"ruamel.yaml.clib" = ["1e77424825caba5553bbade750cec2277ef130647d685c2b38f68bc03453bac6", "392b7c371312abf27fb549ec2d5e0092f7ef6e6c9f767bfb13e83cb903aca0fd", "4d55386129291b96483edcb93b381470f7cd69f97585829b048a3d758d31210a", "550168c02d8de52ee58c3d8a8193d5a8a9491a5e7b2462d27ac5bf63717574c9", "57933a6986a3036257ad7bf283529e7c19c2810ff24c86f4a0cfeb49d2099919", "615b0396a7fad02d1f9a0dcf9f01202bf9caefee6265198f252c865f4227fcc6", "77556a7aa190be9a2bd83b7ee075d3df5f3c5016d395613671487e79b082d784", "7aee724e1ff424757b5bd8f6c5bbdb033a570b2b4683b17ace4dbe61a99a657b", "8073c8b92b06b572e4057b583c3d01674ceaf32167801fe545a087d7a1e8bf52", "9c6d040d0396c28d3eaaa6cb20152cb3b2f15adf35a0304f4f40a3cf9f1d2448", "a0ff786d2a7dbe55f9544b3f6ebbcc495d7e730df92a08434604f6f470b899c5", "b1b7fcee6aedcdc7e62c3a73f238b3d080c7ba6650cd808bce8d7761ec484070", "b66832ea8077d9b3f6e311c4a53d06273db5dc2db6e8a908550f3c14d67e718c", "be018933c2f4ee7de55e7bd7d0d801b3dfb09d21dad0cce8a97995fd3e44be30", "d0d3ac228c9bbab08134b4004d748cf9f8743504875b3603b3afbb97e3472947", "d10e9dd744cf85c219bf747c75194b624cc7a94f0c80ead624b06bfa9f61d3bc", "ea4362548ee0cbc266949d8a441238d9ad3600ca9910c3fe4e82ee3a50706973", "ed5b3698a2bb241b7f5cbbe277eaa7fe48b07a58784fba4f75224fd066d253ad", "f9dcc1ae73f36e8059589b601e8e4776b9976effd76c21ad6a855a74318efd6e"]
 safety = ["0a3a8a178a9c96242b224f033ee8d1d130c0448b0e6622d12deaf37f6c3b4e59", "5059f3ffab3648330548ea9c7403405bbfaf085b11235770825d14c58f24cb78"]
 six = ["1f1b7d42e254082a9db6279deae68afb421ceba6158efa6131de7b3003ee93fd", "30f610279e8b2578cab6db20741130331735c781b56053c59c4076da27f06b66"]
 smmap2 = ["0555a7bf4df71d1ef4218e4807bbf9b201f910174e6e08af2e138d4e517b4dde", "29a9ffa0497e7f2be94ca0ed1ca1aa3cd4cf25a1f6b4f5f87f74b46ed91d609a"]
diff --git a/pyproject.toml b/pyproject.toml
index f4c485c..5a9b37a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ flake8-pytest-style = "^0.1.3"
 nitpick = "^0.21.3"
 
 safety = "^1.8"
-mypy = "^0.750"
+mypy = "^0.760"
 
 sphinx = "^2.3"
 sphinx-readable-theme = "^1.3"