diff --git a/pyproject.lock b/pyproject.lock
index e203088..13901d9 100644
--- a/pyproject.lock
+++ b/pyproject.lock
@@ -311,16 +311,17 @@ description = "pytest: simple powerful testing with Python"
 name = "pytest"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
-version = "4.4.2"
+version = "4.5.0"
 
 [package.dependencies]
 atomicwrites = ">=1.0"
 attrs = ">=17.4.0"
 colorama = "*"
-pluggy = ">=0.11"
+pluggy = ">=0.9,<0.10 || >0.10,<1.0"
 py = ">=1.5.0"
 setuptools = "*"
 six = ">=1.10.0"
+wcwidth = "*"
 
 [package.dependencies.more-itertools]
 python = ">=2.8"
@@ -397,8 +398,16 @@ optional = false
 python-versions = "*"
 version = "1.3.1"
 
+[[package]]
+category = "dev"
+description = "Measures number of Terminal column cells of wide-character codes"
+name = "wcwidth"
+optional = false
+python-versions = "*"
+version = "0.1.7"
+
 [metadata]
-content-hash = "1acd74b0b09d5c5ba84c633c9fc0c0f9a0eb55ba2dcc9bc85ee9d760e7c60a3d"
+content-hash = "f7f76e3c8b0405a9b69ab3f5f74b929a5aff36f55a3673975b615ce4ab6e9ed0"
 python-versions = "^3.6 || ^3.7"
 
 [metadata.hashes]
@@ -432,7 +441,7 @@ py = ["bf92637198836372b520efcba9e020c330123be8ce527e535d185ed4b6f45694", "e7682
 pycodestyle = ["95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56", "e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"]
 pydocstyle = ["2258f9b0df68b97bf3a6c29003edc5238ff8879f1efb6f1999988d934e432bd8", "5741c85e408f9e0ddf873611085e819b809fca90b619f5fd7f34bd4959da3dd4", "ed79d4ec5e92655eccc21eb0c6cf512e69512b4a97d215ace46d17e4990f2039"]
 pyflakes = ["5e8c00e30c464c99e0b501dc160b13a14af7f27d4dffb529c556e30a159e231d", "f277f9ca3e55de669fba45b7393a1449009cff5a37d1af10ebb76c52765269cd"]
-pytest = ["136632a40451162cdfc18fe4d7ecc5d169b558a3d4bbb1603d4005308a42fd03", "62b129bf8368554ca7a942cbdb57ea26aafef46cc65bc317cdac3967e54483a3"]
+pytest = ["1a8aa4fa958f8f451ac5441f3ac130d9fc86ea38780dd2715e6d5c5882700b24", "b8bf138592384bd4e87338cb0f256bf5f615398a649d4bd83915f0e4047a5ca6"]
 pytest-cov = ["2b097cde81a302e1047331b48cadacf23577e431b61e9c6f49a1170bbe3d3da6", "e00ea4fdde970725482f1f35630d12f074e121a23801aabf2ae154ec6bdd343a"]
 pytest-flake8 = ["4d225c13e787471502ff94409dcf6f7927049b2ec251c63b764a4b17447b60c0", "d7e2b6b274a255b7ae35e9224c85294b471a83b76ecb6bd53c337ae977a499af"]
 pytest-isort = ["3be60e0de277b420ff89303ca6494320c41f7819ffa898756b90ef976e4c636a", "4bfee60dad1870b51700d55a85f5ceda766bd9d3d2878c1bbabee80e61b1be1a"]
@@ -440,3 +449,4 @@ pytest-randomly = ["07b642e177c5921386fa36ee3995a4bda918a1d20b3806a4f397a02788f8
 six = ["3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c", "d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"]
 snowballstemmer = ["919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128", "9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89"]
 typed-ast = ["035a54ede6ce1380599b2ce57844c6554666522e376bd111eb940fbc7c3dad23", "037c35f2741ce3a9ac0d55abfcd119133cbd821fffa4461397718287092d9d15", "049feae7e9f180b64efacbdc36b3af64a00393a47be22fa9cb6794e68d4e73d3", "19228f7940beafc1ba21a6e8e070e0b0bfd1457902a3a81709762b8b9039b88d", "2ea681e91e3550a30c2265d2916f40a5f5d89b59469a20f3bad7d07adee0f7a6", "3a6b0a78af298d82323660df5497bcea0f0a4a25a0b003afd0ce5af049bd1f60", "5385da8f3b801014504df0852bf83524599df890387a3c2b17b7caa3d78b1773", "606d8afa07eef77280c2bf84335e24390055b478392e1975f96286d99d0cb424", "69245b5b23bbf7fb242c9f8f08493e9ecd7711f063259aefffaeb90595d62287", "6f6d839ab09830d59b7fa8fb6917023d8cb5498ee1f1dbd82d37db78eb76bc99", "730888475f5ac0e37c1de4bd05eeb799fdb742697867f524dc8a4cd74bcecc23", "9819b5162ffc121b9e334923c685b0d0826154e41dfe70b2ede2ce29034c71d8", "9e60ef9426efab601dd9aa120e4ff560f4461cf8442e9c0a2b92548d52800699", "af5fbdde0690c7da68e841d7fc2632345d570768ea7406a9434446d7b33b0ee1", "b64efdbdf3bbb1377562c179f167f3bf301251411eb5ac77dec6b7d32bcda463", "bac5f444c118aeb456fac1b0b5d14c6a71ea2a42069b09c176f75e9bd4c186f6", "bda9068aafb73859491e13b99b682bd299c1b5fd50644d697533775828a28ee0", "d659517ca116e6750101a1326107d3479028c5191f0ecee3c7203c50f5b915b0", "eddd3fb1f3e0f82e5915a899285a39ee34ce18fd25d89582bc89fc9fb16cd2c6"]
+wcwidth = ["3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e", "f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"]
diff --git a/pyproject.toml b/pyproject.toml
index 0b38e91..0109681 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ pytest-cov = "^2.7"
 pytest-flake8 = "^1.0"
 pytest-randomly = "^3.0"
 pytest-isort = "^0.3"
-pytest = "^4.4"
+pytest = "^4.5"
 flake8-pytest = "^1.3"
 flake8-print = "^3.1"
 flake8-builtins = "^1.4"