diff --git a/README.md b/README.md
index 9df617a6f..bb331007e 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,8 @@ The Monkey itself has been tested on Windows XP, 7, 8.1 and 10. The Linux build
 
 ### Installation
 
+Warning! The Debian package will uninstall the python library 'bson' because of an issue with pymongo. You can reinstall it later, but monkey island will probably not work.
+
 For off-the-shelf use, download our Debian package from our website and follow the guide [written in our blog](https://www.guardicore.com/2016/07/infection-monkey-loose-2/). 
  To manually set up and the C&C server follow the instructions on [Monkey Island readme](monkey_island/readme.txt).  If you wish to compile the binaries yourself, follow the instructions under Building the Monkey from Source.