diff --git a/INSTALL.md b/INSTALL.md
index 0bac8c93f..9f5602b86 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -85,7 +85,7 @@ On Fedora:
 
 On Arch:
 
-    sudo pacman -S gcc clang libc++ cmake ninja libx11 libxcursor mesa-libgl fontconfig
+    sudo pacman -S gcc clang libc++ cmake ninja libx11 libxcursor mesa-libgl fontconfig libwebp
 
 On SUSE: