diff --git a/requirements-dev.txt b/requirements-dev.txt
index a17d2ff..d671960 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ flake8==3.6.0
 async-timeout==3.0.1
 pytest==4.0.2
 pytest-cov==2.6.0
-pytest-mock==1.10.0
+pytest-mock==1.10.4
 coverage==4.5.2
 sphinx==1.8.2
 pep257==0.7.0