diff --git a/requirements.txt b/requirements.txt
index bf1c51c640..c4da567330 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,6 @@ ipython
 markdown
 pexpect
 python-dateutil
-PyYAML
 South
 
 # You may also need to install the following extra packages using the OS