diff --git a/requirements-dev.txt b/requirements-dev.txt
index c62a8c8..cedbad1 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ flake8==3.7.9
 async-timeout==3.0.1
 pytest==5.4.1
 pytest-cov==2.8.1
-pytest-mock==2.0.0
+pytest-mock==3.0.0
 coverage==5.0.4
 sphinx==2.4.4
 pep257==0.7.0