diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9d35887..6d47da4 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -18,7 +18,7 @@ more-itertools==8.0.0
 importlib-metadata==1.6.0
 six==1.13.0
 zipp==3.1.0
-pytest-mock==1.13.0
+pytest-mock==3.15.0
 #Coverage
 coverage==5.0.4
 pytest-cov==2.8.1