diff --git a/meson.build b/meson.build
index 4b192847c..470ea6432 100644
--- a/meson.build
+++ b/meson.build
@@ -295,7 +295,11 @@ if get_option('gtk_doc')
   subdir('docs/reference')
 endif
 
-meson.add_install_script('meson/postinstall.py')
+gnome.post_install(
+  glib_compile_schemas: true,
+  gtk_update_icon_cache: true
+)
+
 meson.add_dist_script('meson/generate-manpages.py')
 meson.add_dist_script('meson/generate-stylesheets.py')
 meson.add_dist_script('meson/check-version.py', meson.project_version(), 'NEWS')
diff --git a/meson/postinstall.py b/meson/postinstall.py
deleted file mode 100755
index 81afb18b7..000000000
--- a/meson/postinstall.py
+++ /dev/null
@@ -1,27 +0,0 @@
-#!/usr/bin/env python3
-
-import os
-import subprocess
-
-prefix = os.environ.get('MESON_INSTALL_PREFIX', '/usr/local')
-datadir = os.path.join(prefix, 'share')
-
-# Packaging tools define DESTDIR and this isn't needed for them
-if 'DESTDIR' not in os.environ:
-    print('Updating icon cache...')
-    icon_cache_dir = os.path.join(datadir, 'icons', 'hicolor')
-    if not os.path.exists(icon_cache_dir):
-        os.makedirs(icon_cache_dir)
-    subprocess.call(['gtk-update-icon-cache', '-qtf', icon_cache_dir])
-
-    print('Updating desktop database...')
-    desktop_database_dir = os.path.join(datadir, 'applications')
-    if not os.path.exists(desktop_database_dir):
-        os.makedirs(desktop_database_dir)
-    subprocess.call(['update-desktop-database', '-q', desktop_database_dir])
-
-    print('Compiling GSettings schemas...')
-    schemas_dir = os.path.join(datadir, 'glib-2.0', 'schemas')
-    if not os.path.exists(schemas_dir):
-        os.makedirs(schemas_dir)
-    subprocess.call(['glib-compile-schemas', schemas_dir])
diff --git a/subprojects/extensions-app/build-aux/meson/postinstall.py b/subprojects/extensions-app/build-aux/meson/postinstall.py
deleted file mode 120000
index cf3400350..000000000
--- a/subprojects/extensions-app/build-aux/meson/postinstall.py
+++ /dev/null
@@ -1 +0,0 @@
-../../../../meson/postinstall.py
\ No newline at end of file
diff --git a/subprojects/extensions-app/meson.build b/subprojects/extensions-app/meson.build
index 21dd44825..432ea1baa 100644
--- a/subprojects/extensions-app/meson.build
+++ b/subprojects/extensions-app/meson.build
@@ -60,7 +60,9 @@ if not meson.is_subproject()
 
   subdir('po')
 
-  meson.add_install_script('build-aux/meson/postinstall.py')
+  gnome.post_install(
+    gtk_update_icon_cache: true
+  )
 
   if appstream_util.found()
     meson.add_dist_script('build-aux/meson/check-version.py',