diff --git a/README b/README
index fb8a43f..4951ba4 100644
--- a/README
+++ b/README
@@ -36,7 +36,7 @@ Ubuntu
 
 .. code:: bash
 
-    $ sudo apt-get install libmysqlclient-dev libsnmp-dev
+    $ sudo apt-get install libmysqlclient-dev libsnmp-dev python-dev
 
 Installation
 ------------
diff --git a/README.md b/README.md
index f625b86..95cdbec 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ downtime for a device during scheduled maintenance to avoid trap storms.
 ### Ubuntu
 
 ```bash
-$ sudo apt-get install libmysqlclient-dev libsnmp-dev
+$ sudo apt-get install libmysqlclient-dev libsnmp-dev python-dev
 ```
 
 ## Installation