diff --git a/libdazzle.spec b/libdazzle.spec
index df590f9..203b8b1 100644
--- a/libdazzle.spec
+++ b/libdazzle.spec
@@ -1,4 +1,5 @@
 %global glib2_version 2.56.0
+%global gtk3_version 3.24.0
 
 Name:           libdazzle
 Version:        3.31.4
@@ -17,7 +18,7 @@ BuildRequires:  pkgconfig(gio-2.0) >= %{glib2_version}
 BuildRequires:  pkgconfig(glib-2.0) >= %{glib2_version}
 BuildRequires:  pkgconfig(gmodule-2.0) >= %{glib2_version}
 BuildRequires:  pkgconfig(gobject-introspection-1.0)
-BuildRequires:  pkgconfig(gtk+-3.0)
+BuildRequires:  pkgconfig(gtk+-3.0) >= %{gtk3_version}
 
 # for tests
 BuildRequires:  dbus
@@ -25,6 +26,7 @@ BuildRequires:  xorg-x11-server-Xvfb
 BuildRequires:  words
 
 Requires:       glib2%{?_isa} >= %{glib2_version}
+Requires:       gtk3%{?_isa} >= %{gtk3_version}
 
 %description
 libdazzle is a collection of fancy features for GLib and Gtk+ that aren't quite