diff --git a/requirements/dev.txt b/requirements/dev.txt
index 31b4272..6631a24 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -11,7 +11,7 @@ multidict==4.1.0
 pip==10.0.0
 pyflakes==1.6.0
 pytest-cov==2.5.1
-pytest-mock==1.9.0
+pytest-mock==3.15.1
 pytest==8.1.1
 towncrier==17.8.0
 tox==4.14.1