diff --git a/README.md b/README.md
index 912f33406..8023b8ddd 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ built for elementary OS.
 ## Building, Testing, and Installation
 
 You'll need the following dependencies:
-* meson >= 0.49.0
+* meson >= 0.57.0
 * gobject-introspection
 * libgee-0.8-dev
 * libgirepository1.0-dev
diff --git a/meson.build b/meson.build
index e5e5fd425..eb773df6c 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
     'granite-7',
     'vala', 'c',
-    meson_version: '>= 0.56.0',
+    meson_version: '>= 0.57.0',
     version: '7.5.0'
 )
 
@@ -52,13 +52,6 @@ libgranite_deps = [
     dependency('gtk4', version: '>=4.4'),
 ]
 
-icons_dir = join_paths(
-    get_option('prefix'),
-    get_option('datadir'),
-    'icons',
-    'hicolor'
-)
-
 pkgconfig = import('pkgconfig')
 gnome = import('gnome')
 i18n = import('i18n')
@@ -75,8 +68,6 @@ if get_option('demo')
     subdir('demo')
 endif
 
-# set up post-install script to refresh the GTK icon cache
-meson.add_install_script(
-    join_paths(meson.current_source_dir(), 'meson', 'post_install.py'),
-    '--iconsdir', icons_dir,
+gnome.post_install(
+    gtk_update_icon_cache: true
 )
diff --git a/meson/post_install.py b/meson/post_install.py
deleted file mode 100755
index 7db7f13fb..000000000
--- a/meson/post_install.py
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/usr/bin/env python3
-
-import argparse
-import os
-import subprocess
-
-parser = argparse.ArgumentParser()
-parser.add_argument("--iconsdir", action="store", required=True)
-args = vars(parser.parse_args())
-
-icons_dir = args["iconsdir"]
-
-if not os.environ.get('DESTDIR'):
-    print('Compiling icon cache ...')
-    subprocess.run(['gtk4-update-icon-cache', icons_dir])
-