diff --git a/build-aux/meson/postinstall.py b/build-aux/meson/postinstall.py
index 6a3ea97..cfa1e2d 100755
--- a/build-aux/meson/postinstall.py
+++ b/build-aux/meson/postinstall.py
@@ -9,13 +9,6 @@ destdir = environ.get('DESTDIR', '')
 
 # Package managers set this so we don't need to run
 if not destdir:
-    print('Updating icon cache...')
-    call(['gtk-update-icon-cache', '-qtf', path.join(datadir, 'icons', 'hicolor')])
-
     print('Updating desktop database...')
     call(['update-desktop-database', '-q', path.join(datadir, 'applications')])
 
-    print('Compiling GSettings schemas...')
-    call(['glib-compile-schemas', path.join(datadir, 'glib-2.0', 'schemas')])
-
-
diff --git a/meson.build b/meson.build
index 5623ddf..0b6195d 100644
--- a/meson.build
+++ b/meson.build
@@ -1,12 +1,13 @@
 project('koto', 'c',
 	version: '0.1.0',
-	meson_version: '>= 0.50.0',
+	meson_version: '>= 0.57.0',
 	default_options: [ 'warning_level=2',
 		'c_std=gnu11',
 	],
 )
 
 i18n = import('i18n')
+gnome = import('gnome')
 
 config_h = configuration_data()
 config_h.set_quoted('PACKAGE_VERSION', meson.project_version())
@@ -17,11 +18,15 @@ configure_file(
 	configuration: config_h,
 )
 add_project_arguments([
-	'-I' + meson.build_root(),
+	'-I' + meson.current_build_dir(),
 ], language: 'c')
 
 subdir('data')
 subdir('src')
 subdir('po')
 
+gnome.post_install(
+	glib_compile_schemas: true,
+	gtk_update_icon_cache: true
+)
 meson.add_install_script('build-aux/meson/postinstall.py')
diff --git a/src/koto-window.h b/src/koto-window.h
index bab11e8..e6aa68c 100644
--- a/src/koto-window.h
+++ b/src/koto-window.h
@@ -17,7 +17,7 @@
 
 #pragma once
 
-#include <gtk/gtk.h>
+#include <gtk-3.0/gtk/gtk.h>
 
 G_BEGIN_DECLS