diff --git a/requirements.txt b/requirements.txt
index 2cfc05081..0d360c10b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,6 +11,7 @@ scipy==0.19.1
 jsonschema==2.6.0
 TA-Lib==0.4.10
 pytest==3.2.2
+pytest-mock==1.6.3
 
 # Required for plotting data
 #matplotlib==2.0.2