diff --git a/requirements-dev.txt b/requirements-dev.txt
index 02634ae..a497b76 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ flake8==3.8.2
 async-timeout==3.0.1
 pytest==5.4.3
 pytest-cov==2.9.0
-pytest-mock==3.1.0
+pytest-mock==3.1.1
 coverage==5.1
 sphinx==3.0.4
 pep257==0.7.0