diff --git a/mingw-gtk2.spec b/mingw-gtk2.spec
index 6ab4ce0..03c1d86 100644
--- a/mingw-gtk2.spec
+++ b/mingw-gtk2.spec
@@ -75,6 +75,7 @@ BuildRequires:  gtk2
 BuildRequires:  gtk2-devel
 # Packages needed for regenerating configure
 BuildRequires:  gtk-doc
+BuildRequires:  gobject-introspection-devel
 
 # Needed for the patch
 BuildRequires:  autoconf automake libtool