diff --git a/Linux.md b/Linux.md
index 3869901..6e0dc56 100644
--- a/Linux.md
+++ b/Linux.md
@@ -8,5 +8,6 @@ Before installing Ebiten, you might need these libraries:
 * libxcursor-dev
 * libxinerama-dev
 * libxi-dev
+* libopenal-dev (if you use audio package)
 
 Ebiten is tested on Ubuntu Linux x64.
\ No newline at end of file