diff --git a/frei0r-plugins.spec b/frei0r-plugins.spec
index a3718f3..38354c3 100644
--- a/frei0r-plugins.spec
+++ b/frei0r-plugins.spec
@@ -8,8 +8,11 @@ License:        GPLv2+
 URL:            http://www.piksel.org/frei0r
 Source0:        http://www.piksel.no/frei0r/releases/frei0r-plugins-%{version}.tar.gz
 
+Buildrequires:  libtool
+
 BuildRequires:  gavl-devel >= 0.2.3
 BuildRequires:  opencv-devel >= 1.0.0
+BuildRequires:  cairo-devel >= 1.0.0
      
 
 %description