diff --git a/poetry.lock b/poetry.lock
index 9865157..b5f2f67 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -354,7 +354,7 @@ diagrams = ["jinja2", "railroad-diagrams"]
 
 [[package]]
 name = "pytest"
-version = "6.2.5"
+version = "7.0.0"
 description = "pytest: simple powerful testing with Python"
 category = "dev"
 optional = false
@@ -369,10 +369,10 @@ iniconfig = "*"
 packaging = "*"
 pluggy = ">=0.12,<2.0"
 py = ">=1.8.2"
-toml = "*"
+tomli = ">=1.0.0"
 
 [package.extras]
-testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]
+testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "pygments (>=2.7.2)", "requests", "xmlschema"]
 
 [[package]]
 name = "pytest-cov"
@@ -473,7 +473,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.2"
-content-hash = "70c579d9ed745cd29cfafc59dff4a632144ea31a367ce2c53af3b9cc51a4ebf0"
+content-hash = "86f1ed78ebe8964a511024b8528908a2451a864580933c48b9af373266a9672c"
 
 [metadata.files]
 atomicwrites = [
@@ -660,8 +660,8 @@ pyparsing = [
     {file = "pyparsing-3.0.6.tar.gz", hash = "sha256:d9bdec0013ef1eb5a84ab39a3b3868911598afa494f5faa038647101504e2b81"},
 ]
 pytest = [
-    {file = "pytest-6.2.5-py3-none-any.whl", hash = "sha256:7310f8d27bc79ced999e760ca304d69f6ba6c6649c0b60fb0e04a4a77cacc134"},
-    {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
+    {file = "pytest-7.0.0-py3-none-any.whl", hash = "sha256:42901e6bd4bd4a0e533358a86e848427a49005a3256f657c5c8f8dd35ef137a9"},
+    {file = "pytest-7.0.0.tar.gz", hash = "sha256:dad48ffda394e5ad9aa3b7d7ddf339ed502e5e365b1350e0af65f4a602344b11"},
 ]
 pytest-cov = [
     {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
diff --git a/pyproject.toml b/pyproject.toml
index b937600..da667ec 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ flake8 = "^4.0.1"
 isort = "^5.10.1"
 mypy = "^0.931"
 pre-commit = "^2.17.0"
-pytest = "^6.2.5"
+pytest = "^7.0.0"
 pytest-cov = "^3.0.0"
 
 [tool.black]