diff --git a/bumblebee/modules/sun.py b/bumblebee/modules/sun.py
index e27d750..b4d1286 100644
--- a/bumblebee/modules/sun.py
+++ b/bumblebee/modules/sun.py
@@ -2,6 +2,10 @@
 
 """Displays sunrise and sunset times
 
+Requires the following python packages:
+    * requests
+    * suntime
+
 Parameters:
     * cpu.lat : Latitude of your location
     * cpu.lon : Longitude of your location