diff --git a/avogadro.spec b/avogadro.spec
index f211df2..ac17dd0 100644
--- a/avogadro.spec
+++ b/avogadro.spec
@@ -28,6 +28,7 @@ BuildRequires:  pkgconfig(eigen2) >= 2.0.3
 BuildRequires:  pkgconfig(glew) >= 1.5.0
 BuildRequires:  pkgconfig(openbabel-2.0) >= 2.2.2
 BuildRequires:  pkgconfig(QtGui) pkgconfig(QtNetwork) pkgconfig(QtOpenGL)
+BuildRequires:  sip-devel
 
 Requires: %{name}-libs%{?_isa} = %{version}-%{release}