diff --git a/requirements.txt b/requirements.txt
index fb19d3c7d41..c1344b43979 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ sqlparse==0.2.2
 Tempita==0.5.2            # via pylons, sqlalchemy-migrate, weberror
 tzlocal==1.3
 unicodecsv==0.14.1
-vdm==0.15
+vdm==0.14
 webencodings==0.5.1       # via html5lib
 WebError==0.13.1          # via pylons
 WebHelpers==1.3           # via pylons