diff --git a/README.md b/README.md
index 00fb8dd..c953dcd 100644
--- a/README.md
+++ b/README.md
@@ -50,6 +50,7 @@ Requirements
 - libpam-dev
 - libcairo-dev
 - libxcb-composite0
+- libxcb-composite0-dev
 - libxcb-xinerama
 - libev
 - libx11-dev
@@ -59,7 +60,7 @@ Requirements
 
 ##### Ubuntu
 
-    sudo apt-get install pkg-config libxcb1 libpam-dev libcairo-dev libxcb-xinerama0-dev libev-dev libx11-dev libx11-xcb-dev libxkbcommon0 libxkbcommon-x11-0 libxcb-dpms0-dev libxcb-image0-dev libxcb-util0-dev libxcb-xkb-dev libxkbcommon-x11-dev libxkbcommon-dev
+    sudo apt-get install pkg-config libxcb1 libpam-dev libcairo-dev libxcb-composite0 libxcb-composite0-dev libxcb-xinerama0-dev libev-dev libx11-dev libx11-xcb-dev libxkbcommon0 libxkbcommon-x11-0 libxcb-dpms0-dev libxcb-image0-dev libxcb-util0-dev libxcb-xkb-dev libxkbcommon-x11-dev libxkbcommon-dev
     
 ##### Aur Package
 https://aur.archlinux.org/packages/i3lock-color-git