diff --git a/requirements_production.txt b/requirements_production.txt
index 7accd2074..9c4d6fdb0 100644
--- a/requirements_production.txt
+++ b/requirements_production.txt
@@ -5,7 +5,7 @@ bleach>=1.2,<1.5
 django-haystack>=2.1,<2.2
 django-mptt>=0.6,<0.7
 jsonfield>=0.9,<0.10
-natsort>=3.1,<3.2
+natsort>=3.2,<3.3
 reportlab>=2.7,<2.8
 roman>=2.0,<2.1
 setuptools>=2.1,<3.5