diff --git a/poetry.lock b/poetry.lock
index c5624dc4..5f4b8bdd 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1280,7 +1280,7 @@ histogram = ["pygal", "pygaljs"]
 
 [[package]]
 name = "pytest-cov"
-version = "3.0.0"
+version = "4.0.0"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
@@ -1635,7 +1635,7 @@ docs = ["mkdocs", "mkdocs-material", "mkdocs-jupyter", "mkdocstrings", "mkdocstr
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.8"
-content-hash = "c8b6d8dcdf150746061166baba3e3e599070cce6a82e0f4bee8a32906b76cc70"
+content-hash = "d55d61154ea4bf2c58e7375c43883ae85feb78708040b87a32c3bcb73fb2873e"
 
 [metadata.files]
 appnope = [
@@ -2503,8 +2503,8 @@ pytest-benchmark = [
     {file = "pytest_benchmark-3.4.1-py2.py3-none-any.whl", hash = "sha256:36d2b08c4882f6f997fd3126a3d6dfd70f3249cde178ed8bbc0b73db7c20f809"},
 ]
 pytest-cov = [
-    {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
-    {file = "pytest_cov-3.0.0-py3-none-any.whl", hash = "sha256:578d5d15ac4a25e5f961c938b85a05b09fdaae9deef3bb6de9a6e766622ca7a6"},
+    {file = "pytest-cov-4.0.0.tar.gz", hash = "sha256:996b79efde6433cdbd0088872dbc5fb3ed7fe1578b68cdbba634f14bb8dd0470"},
+    {file = "pytest_cov-4.0.0-py3-none-any.whl", hash = "sha256:2feb1b751d66a8bd934e5edfa2e961d11309dc37b73b0eabe73b5945fee20f6b"},
 ]
 pytest-mock = [
     {file = "pytest-mock-3.8.2.tar.gz", hash = "sha256:77f03f4554392558700295e05aed0b1096a20d4a60a4f3ddcde58b0c31c8fca2"},
diff --git a/pyproject.toml b/pyproject.toml
index 8fe0098a..1121bed2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ nox = "^2022.8.7"
 nox-poetry = "^1.0.0"
 pytest = "^7.1.2"
 pytest-benchmark = "^3.4.1"
-pytest-cov = "^3.0.0"
+pytest-cov = "^4.0.0"
 pytest-mock = "^3.8.2"
 # for datatype testing
 Faker = "^15.0.0"