diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4431cc7..3690d4d 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,4 +3,4 @@
 coveralls==1.8.2
 pytest==5.3.2
 pytest-cov==2.8.1
-pytest-mock==1.11.2
+pytest-mock==1.13.0