diff --git a/INSTALL b/INSTALL
index 1b17c3a25..9b2705496 100644
--- a/INSTALL
+++ b/INSTALL
@@ -6,6 +6,12 @@ Install the python-cheetah package and pandoc:
 
 apt-get install python-cheetah pandoc
 
+
+Install the python-simplejson
+
+apt-get install python-simplejson
+
+ 
 Unzip and untar the source into a directory.  Change to the directory
 containing the program.  Do `make` and then run `./plinth.py` and
 point your web browser at `localhost:8000`.  The default username is