diff --git a/poetry.lock b/poetry.lock
index d51bc35..575876c 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -67,6 +67,9 @@ category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
 
+[package.dependencies]
+toml = {version = "*", optional = true, markers = "extra == \"toml\""}
+
 [package.extras]
 toml = ["toml"]
 
@@ -435,14 +438,14 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-cov"
-version = "2.11.1"
+version = "2.12.0"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [package.dependencies]
-coverage = ">=5.2.1"
+coverage = {version = ">=5.2.1", extras = ["toml"]}
 pytest = ">=4.6"
 
 [package.extras]
@@ -613,7 +616,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pyt
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6.0"
-content-hash = "15f7d14f0c6f481f0b4c49bbabe5afa816d17e5c289fc6e10729d92eb4f8142a"
+content-hash = "c73e2597fd744ea0813f3b9463379fd3f692012b917d5f1dd787f03752ea541e"
 
 [metadata.files]
 atomicwrites = [
@@ -868,8 +871,8 @@ pytest = [
     {file = "pytest-6.2.4.tar.gz", hash = "sha256:50bcad0a0b9c5a72c8e4e7c9855a3ad496ca6a881a3641b4260605450772c54b"},
 ]
 pytest-cov = [
-    {file = "pytest-cov-2.11.1.tar.gz", hash = "sha256:359952d9d39b9f822d9d29324483e7ba04a3a17dd7d05aa6beb7ea01e359e5f7"},
-    {file = "pytest_cov-2.11.1-py2.py3-none-any.whl", hash = "sha256:bdb9fdb0b85a7cc825269a4c56b48ccaa5c7e365054b6038772c32ddcdc969da"},
+    {file = "pytest-cov-2.12.0.tar.gz", hash = "sha256:8535764137fecce504a49c2b742288e3d34bc09eed298ad65963616cc98fd45e"},
+    {file = "pytest_cov-2.12.0-py2.py3-none-any.whl", hash = "sha256:95d4933dcbbacfa377bb60b29801daa30d90c33981ab2a79e9ab4452c165066e"},
 ]
 pytest-mock = [
     {file = "pytest-mock-3.6.1.tar.gz", hash = "sha256:40217a058c52a63f1042f0784f62009e976ba824c418cced42e88d5f40ab0e62"},
diff --git a/pyproject.toml b/pyproject.toml
index a442663..ad094c9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -55,7 +55,7 @@ pdoc3 = "0.9.2"
 pep8-naming = "0.11.1"
 pydocstyle = "6.0.0"
 pytest = "6.2.4"
-pytest-cov = "2.11.1"
+pytest-cov = "2.12.0"
 pytest-mock = "3.6.1"
 requests-mock = "1.9.2"
 yapf = "0.31.0"