diff --git a/README.md b/README.md
index d944f77..c4a01e8 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ From a downloaded tarball or zip archive:
 
 ##### Install build tools
 
-Debian/Ubuntu/Mint:    `$ sudo apt-get install build-essential libXmu-dev libXi-dev libgl-dev git`
+Debian/Ubuntu/Mint:    `$ sudo apt-get install build-essential libxmu-dev libxi-dev libgl-dev libosmesa-dev git`
 
 RedHat/CentOS/Fedora:  `$ sudo yum install libXmu-devel libXi-devel libGL-devel git`