diff --git a/Documentation/BuildInstructionsLadybird.md b/Documentation/BuildInstructionsLadybird.md
index 886d923b236..a23776bfe53 100644
--- a/Documentation/BuildInstructionsLadybird.md
+++ b/Documentation/BuildInstructionsLadybird.md
@@ -21,7 +21,7 @@ sudo apt install qt6-wayland
 On Arch Linux/Manjaro:
 
 ```
-sudo pacman -S --needed base-devel cmake libgl ninja qt6-base qt6-tools qt6-wayland qt6-multimedia ccache ttf-liberation curl unzip zip tar
+sudo pacman -S --needed base-devel cmake libgl ninja qt6-base qt6-tools qt6-wayland qt6-multimedia ccache ttf-liberation curl unzip zip tar autoconf-archive
 ```
 
 On Fedora or derivatives: