diff --git a/docs/quickstart.rst b/docs/quickstart.rst
index 536074d..b5c3947 100644
--- a/docs/quickstart.rst
+++ b/docs/quickstart.rst
@@ -4,6 +4,8 @@ Quick start
 Requirements
 ............
 
+- **If using multiple servers, it is critical that the servers' clocks are synchronized.**
+  More detail here: http://django-cachalot.readthedocs.org/en/latest/limits.html#multiple-servers
 - Django 1.6 or 1.7
 - Python 2.6, 2.7, 3.2, 3.3, or 3.4
 - a cache configured as ``'default'`` with one of these backends: