diff --git a/scripts/requirements.txt b/scripts/requirements.txt
index 66358583..ec913f2f 100644
--- a/scripts/requirements.txt
+++ b/scripts/requirements.txt
@@ -11,6 +11,7 @@ distribute==0.7.3
 future==0.15.2
 leveldb==0.193
 lxml==3.6.0
+lru-dict==1.1.3
 marisa-trie==0.7.2
 pycountry==1.20
 pyproj==1.9.5.1