diff --git a/requirements.txt b/requirements.txt
index b372c08..bcc11a1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ greenlet>=0.4.2,<0.5.0
 netaddr==0.7.12
 pygeoip>=0.3.1,<0.4.0
 requests>=2.3.0,<2.6.0
-sortedcontainers==0.9.4
+sortedcontainers==2.3.0
 wsgiref==0.1.2
 unicodecsv==0.9.4