diff --git a/pre-requirements.txt b/pre-requirements.txt
new file mode 100644
index 0000000..d801f46
--- /dev/null
+++ b/pre-requirements.txt
@@ -0,0 +1 @@
+numpy==1.6.2
diff --git a/requirements.txt b/requirements.txt
index d6efbef..1b1f5e3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,6 @@ lxml==3.0.1
 mock==0.8.0
 nltk==2.0.3
 nose==1.2.1
-numpy==1.6.2
 scipy==0.11.0
 path.py
 pip