diff --git a/dev/buildguide.rst b/dev/buildguide.rst
index 63847be..950e564 100644
--- a/dev/buildguide.rst
+++ b/dev/buildguide.rst
@@ -122,7 +122,7 @@ Ubuntu, Debian
 
 .. code-block:: bash
 
-    $ sudo apt install build-essential cmake extra-cmake-modules pkg-config ninja-build libfreetype-dev libsdl2-dev libpng-dev libopenal-dev librtmidi-dev libfaudio-dev qtbase5-dev qttools5-dev libevdev-dev
+    $ sudo apt install build-essential cmake extra-cmake-modules pkg-config ninja-build libfreetype-dev libsdl2-dev libpng-dev libopenal-dev librtmidi-dev libfaudio-dev qtbase5-dev qtbase5-private-dev qttools5-dev libevdev-dev
 
 
 macOS (Homebrew)