diff --git a/README b/README
index e698234d6..e6a07d2ba 100644
--- a/README
+++ b/README
@@ -5,7 +5,7 @@ It's based on dwm.
 
 Requirements
 ------------
-In order to build jdwm you need the Xlib header files.
+In order to build jdwm you need the Xlib header files and libconfig.
 
 Installation
 ------------