diff --git a/INSTALL b/INSTALL
index 5c4235d..82a0e72 100644
--- a/INSTALL
+++ b/INSTALL
@@ -34,6 +34,7 @@ Read the INSTALl file:
  
 Install the *.deb file:
 
+  $ sudo apt-get update
   $ sudo apt-get install gdebi-core
   $ sudo gdebi coturn*.deb