diff --git a/etc/requirements.txt b/etc/requirements.txt
index 0c8dce88..9920b29d 100644
--- a/etc/requirements.txt
+++ b/etc/requirements.txt
@@ -12,7 +12,7 @@ statsmodels==0.5.0
 
 pandas==0.12.0
 python-dateutil==2.2
-six==1.5.2
+six==1.6.1
 
 # Cython is required for TA-Lib
 Cython==0.20