diff --git a/requirements-dev.txt b/requirements-dev.txt
index 548c29d..c21941e 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,6 +4,6 @@ autopep8==1.6.0
 codecov==2.1.12
 pytest==7.1.2
 pytest-cov==3.0.0
-pytest-mock==3.8.2
+pytest-mock==3.9.0
 flake8==4.0.1
 freezegun==1.2.1