diff --git a/etc/requirements.txt b/etc/requirements.txt
index 81cd4320..8ecf7ef6 100644
--- a/etc/requirements.txt
+++ b/etc/requirements.txt
@@ -24,7 +24,7 @@ six==1.9.0
 # For fetching remote data
 requests==2.7.0
 
-Cython==0.22
+Cython==0.22.1
 
 # faster OrderedDict
 cyordereddict==0.2.2