diff --git a/requirements.txt b/requirements.txt
index 305a8aa..83b4eba 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,8 @@
 Django==1.8.3
 Fabric==1.10.2
+PyYAML==3.11
 Pygments==2.0.2
+biplist==0.9
 defusedxml==0.4.1
 dj-database-url==0.3.0
 dj-static==0.0.6