diff --git a/libIDL.spec b/libIDL.spec
index 828dc71..1a60e02 100644
--- a/libIDL.spec
+++ b/libIDL.spec
@@ -1,7 +1,7 @@
 Summary: Library for parsing IDL (Interface Definition Language)
 Name: libIDL
 Version: 0.8.6
-Release: 3
+Release: 4
 Source: ftp://ftp.gnome.org/pub/GNOME/sources/libIDL/%{name}-%{version}.tar.bz2
 Patch0: libIDL-0.8.6-multilib.patch
 Group: System Environment/Libraries
@@ -10,6 +10,7 @@ BuildRoot: %{_tmppath}/%{name}-%{version}-root
 BuildRequires: pkgconfig >= 0.8
 BuildRequires: glib2-devel >= 2.0
 BuildRequires: automake14 libtool autoconf
+BuildRequires: flex
 
 %description
 libIDL is a library for parsing IDL (Interface Definition Language). 
@@ -75,6 +76,9 @@ rm -rf %{buildroot}
 %{_infodir}/libIDL2.info.gz
 
 %changelog
+* Mon Jun  5 2006 Matthias Clasen <mclasen@redhat.com> - 0.8.6-4
+- Fix missing BuildRequires
+
 * Tue May 23 2006 Matthias Clasen <mclasen@redhat.com> - 0.8.6-3
 - Fix multilib conflicts