diff --git a/Pipfile b/Pipfile
index dc9f7896..26e8d55a 100644
--- a/Pipfile
+++ b/Pipfile
@@ -23,5 +23,5 @@ uvloop = "==0.14.0"
 flake8 = "==3.7.9"
 mypy = "==0.761"
 mypy-extensions = "==0.4.3"
-pytest = "==5.3.4"
+pytest = "==5.3.5"
 pytest-asyncio = "==0.10.0"
diff --git a/Pipfile.lock b/Pipfile.lock
index acda9329..5e157626 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "825f84fe4c3934064160db13551347a330cde9de58ef159bb46a527677ec8f1f"
+            "sha256": "65af376d8f43015569e3b17ab211d82bc249237bc24358bf5c2214f562cfb923"
         },
         "pipfile-spec": 6,
         "requires": {},
@@ -164,22 +164,29 @@
                 "sha256:0701f7965903a1c3f6f09328c1278ac0eee8f56f244e66af79cb224b7ef3801c",
                 "sha256:1f2c4ec372bf1c4a2c7e4bb20845e8bcf8050365189d86806bad1e3ae473d081",
                 "sha256:4235bc124fdcf611d02047d7034164897ade13046bda967768836629bc62784f",
+                "sha256:5828c7f3e615f3975d48f40d4fe66e8a7b25f16b5e5705ffe1d22e43fb1f6261",
                 "sha256:585c0869f75577ac7a8ff38d08f7aac9033da2c41c11352ebf86a04652758b7a",
                 "sha256:5d467ce9c5d35b3bcc7172c06320dddb275fea6ac2037f72f0a4d7472035cea9",
+                "sha256:63dbc21efd7e822c11d5ddbedbbb08cd11a41e0032e382a0fd59b0b08e405a3a",
                 "sha256:7bc1b221e7867f2e7ff1933165c0cec7153dce93d0cdba6554b42a8beb687bdb",
+                "sha256:8620ce80f50d023d414183bf90cc2576c2837b88e00bea3f33ad2630133bbb60",
                 "sha256:8a0ebda56ebca1a83eb2d1ac266649b80af8dd4b4a3502b2c1e09ac2f88fe128",
                 "sha256:90ed0e36455a81b25b7034038e40880189169c308a3df360861ad74da7b68c1a",
                 "sha256:95e67224815ef86924fbc2b71a9dbd1f7262384bca4bc4793645794ac4200717",
                 "sha256:afdb34b715daf814d1abea0317b6d672476b498472f1e5aacbadc34ebbc26e89",
                 "sha256:b4b2c63cc7963aedd08a5f5a454c9f67251b1ac9e22fd9d72836206c42dc2a72",
+                "sha256:d068f55bda3c2c3fcaec24bd083d9e2eede32c583faf084d6e4b9daaea77dde8",
                 "sha256:d5b3c4b7edd2e770375a01139be11307f04341ec709cf724e0f26ebb1eef12c3",
                 "sha256:deadf4df349d1dcd7b2853a2c8796593cc346600726eff680ed8ed11812382a7",
                 "sha256:df533af6f88080419c5a604d0d63b2c33b1c0c4409aba7d0cb6de305147ea8c8",
                 "sha256:e4aa948eb15018a657702fee0b9db47e908491c64d36b4a90f59a64741516e77",
                 "sha256:e5d842c73e4ef6ed8c1bd77806bf84a7cb535f9c0cf9b2c74d02ebda310070e1",
+                "sha256:ebec08091a22c2be870890913bdadd86fcd8e9f0f22bcb398abd3af914690c15",
                 "sha256:edc15fcfd77395e24543be48871c251f38132bb834d9fdfdad756adb6ea37679",
                 "sha256:f2b74784ed7e0bc2d02bd53e48ad6ba523c9b36c194260b7a5045071abbb1012",
-                "sha256:fa071559f14bd1e92077b1b5f6c22cf09756c6de7139370249eb372854ce51e6"
+                "sha256:fa071559f14bd1e92077b1b5f6c22cf09756c6de7139370249eb372854ce51e6",
+                "sha256:fd52e796fee7171c4361d441796b64df1acfceb51f29e545e812f16d023c4bbc",
+                "sha256:fe976a0f1ef09b3638778024ab9fb8cde3118f203364212c198f71341c0715ca"
             ],
             "index": "pypi",
             "version": "==4.5.0"
@@ -407,10 +414,10 @@
         },
         "more-itertools": {
             "hashes": [
-                "sha256:1a2a32c72400d365000412fe08eb4a24ebee89997c18d3d147544f70f5403b39",
-                "sha256:c468adec578380b6281a114cb8a5db34eb1116277da92d7c46f904f0b52d3288"
+                "sha256:5dd8bcf33e5f9513ffa06d5ad33d78f31e1931ac9a18f33d37e77a180d393a7c",
+                "sha256:b1ddb932186d8a6ac451e1d95844b382f55e12686d51ca0c68b6f61f2ab7a507"
             ],
-            "version": "==8.1.0"
+            "version": "==8.2.0"
         },
         "mypy": {
             "hashes": [
@@ -484,11 +491,11 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:1d122e8be54d1a709e56f82e2d85dcba3018313d64647f38a91aec88c239b600",
-                "sha256:c13d1943c63e599b98cf118fcb9703e4d7bde7caa9a432567bcdcae4bf512d20"
+                "sha256:0d5fe9189a148acc3c3eb2ac8e1ac0742cb7618c084f3d228baaec0c254b318d",
+                "sha256:ff615c761e25eb25df19edddc0b970302d2a9091fbce0e7213298d85fb61fef6"
             ],
             "index": "pypi",
-            "version": "==5.3.4"
+            "version": "==5.3.5"
         },
         "pytest-asyncio": {
             "hashes": [