diff --git a/doc/web/src/site/apt/developing.apt b/doc/web/src/site/apt/developing.apt
index 46a59a9..385b8a9 100644
--- a/doc/web/src/site/apt/developing.apt
+++ b/doc/web/src/site/apt/developing.apt
@@ -117,6 +117,8 @@ come out.
 
   * libxext-dev:  <<<sudo apt-get install libxext-dev>>>
 
+  * libpcap-dev:  <<<sudo apt-get install libpcap-dev>>>
+
   []