diff --git a/poetry.lock b/poetry.lock
index 401ba1c..42eb186 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -409,11 +409,11 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-mock"
-version = "3.6.1"
+version = "3.9.0"
 description = "Thin-wrapper around the mock package for easier use with pytest"
 category = "dev"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.7"
 
 [package.dependencies]
 pytest = ">=5.0"
@@ -569,7 +569,7 @@ testing = ["func-timeout", "jaraco.itertools", "pytest (>=6)", "pytest-black (>=
 [metadata]
 lock-version = "1.1"
 python-versions = ">=3.7 <3.9"
-content-hash = "43a816130f275d1ccb64747e47028c35a7670bb269bc453cac17a029fe9e8993"
+content-hash = "9ad73d4d442efd0e4f05d16737a5ad7d8e5d2f35dd3bdefa4b79449bc6b396f4"
 
 [metadata.files]
 appdirs = [
@@ -853,8 +853,8 @@ pytest = [
     {file = "pytest-6.2.5.tar.gz", hash = "sha256:131b36680866a76e6781d13f101efb86cf674ebb9762eb70d3082b6f29889e89"},
 ]
 pytest-mock = [
-    {file = "pytest-mock-3.6.1.tar.gz", hash = "sha256:40217a058c52a63f1042f0784f62009e976ba824c418cced42e88d5f40ab0e62"},
-    {file = "pytest_mock-3.6.1-py3-none-any.whl", hash = "sha256:30c2f2cc9759e76eee674b81ea28c9f0b94f8f0445a1b87762cadf774f0df7e3"},
+    {file = "pytest-mock-3.9.0.tar.gz", hash = "sha256:c899a0dcc8a5f22930acd020b500abd5f956911f326864a3b979e4866e14da82"},
+    {file = "pytest_mock-3.9.0-py3-none-any.whl", hash = "sha256:1a1b9264224d026932d6685a0f9cef3b61d91563c3e74af9fe5afb2767e13812"},
 ]
 pytest-sugar = [
     {file = "pytest-sugar-0.9.4.tar.gz", hash = "sha256:b1b2186b0a72aada6859bea2a5764145e3aaa2c1cfbb23c3a19b5f7b697563d3"},
diff --git a/pyproject.toml b/pyproject.toml
index 2550a1e..efe6959 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ matplotlib = "^3.5.1"
 [tool.poetry.dev-dependencies]
 pysen = { version = "^0.10.2", extras = ["lint"] }
 pytest = "^6.2.5"
-pytest-mock = "^3.6.1"
+pytest-mock = "^3.9.0"
 pytest-sugar = "^0.9.4"
 
 [build-system]