diff --git a/poetry.lock b/poetry.lock
index 460297e..c6f7a81 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -93,7 +93,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "coverage"
-version = "7.0.3"
+version = "7.2.3"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
@@ -415,7 +415,7 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-cov"
-version = "3.0.0"
+version = "4.0.0"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
@@ -514,7 +514,7 @@ python-versions = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8,<3.10"
-content-hash = "f5614947eb2f77e9cd8bd9dc026a924f4cb7394c3fef9cb175ab5afbe201ca73"
+content-hash = "6be63839fba38d5e4fe8a6e32d7a748a74d5984180261233a0c5ae06c8c42005"
 
 [metadata.files]
 appnope = []
diff --git a/pyproject.toml b/pyproject.toml
index dd7920b..d7b5e3a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ scipy = "~1.10"
 [tool.poetry.dev-dependencies]
 pytest = ">=6"
 flake8 = "^4.0.0"
-pytest-cov = "^3.0.0"
+pytest-cov = "^4.0.0"
 mypy = "^0.961"
 ipython = "^8.2.0"
 black = "^22.3.0"