diff --git a/macos/README.txt b/macos/README.txt
index 13d2bd312..ffc297167 100644
--- a/macos/README.txt
+++ b/macos/README.txt
@@ -23,6 +23,7 @@ As of this writing, the required libraries are:
 
   cairo
   fribidi
+  pkgconfig
   libpaper
   libpng
   librsvg