diff --git a/README.md b/README.md
index a1a49ec..838b92f 100644
--- a/README.md
+++ b/README.md
@@ -26,12 +26,13 @@ Building on Linux
 ### Building for Linux
 
 You will need CMake, libpng, zlib, json-c, fontconfig, freetype, gtkmm 2.4,
-pangomm 1.4, OpenGL and OpenGL GLU.
+pangomm 1.4, OpenGL, OpenGL GLU and OpenGL GLEW, and optionally, the Space Navigator
+client library.
 On a Debian derivative (e.g. Ubuntu) these can be installed with:
 
     apt-get install libpng12-dev libjson-c-dev libfreetype6-dev \
                     libfontconfig1-dev libgtkmm-2.4-dev libpangomm-1.4-dev \
-                    libgl-dev libglu-dev libglew-dev cmake
+                    libgl-dev libglu-dev libglew-dev libspnav-dev cmake
 
 Before building, check out the necessary submodules: