diff --git a/gstreamer1-plugins-base.spec b/gstreamer1-plugins-base.spec
index bbd798e..92bd2bf 100644
--- a/gstreamer1-plugins-base.spec
+++ b/gstreamer1-plugins-base.spec
@@ -39,6 +39,7 @@ BuildRequires:  pango-devel
 BuildRequires:  pkgconfig
 BuildRequires:  opus-devel
 BuildRequires:  gdk-pixbuf2-devel
+BuildRequires:  gtk3-devel
 # for autogen.sh
 BuildRequires:  mesa-libGL-devel
 BuildRequires:  mesa-libGLES-devel