diff --git a/README b/README
index 2fd95e926a..19a4478c52 100644
--- a/README
+++ b/README
@@ -121,6 +121,7 @@ REQUIREMENTS:
         libqrencode (optional)
         libmicrohttpd (optional)
         libpython (optional)
+        gobject-introspection > 1.40.0 (optional)
         make, gcc, and similar tools
 
         During runtime, you need the following additional