diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a0870f7..088fafb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,7 +7,7 @@ cache:
     - _ccache/
 
 variables:
-  DEBIAN_IMAGE: "registry.freedesktop.org/pwithnall/malcontent/debian-unstable:v3"
+  DEBIAN_IMAGE: "registry.freedesktop.org/pwithnall/malcontent/debian-unstable:v4"
   MESON_TEST_TIMEOUT_MULTIPLIER: 2
   G_MESSAGES_DEBUG: all
   MESON_COMMON_OPTIONS: "--buildtype debug --wrap-mode=nodownload"
diff --git a/.gitlab-ci/debian-unstable.Dockerfile b/.gitlab-ci/debian-unstable.Dockerfile
index cf3a9b3..226bdea 100644
--- a/.gitlab-ci/debian-unstable.Dockerfile
+++ b/.gitlab-ci/debian-unstable.Dockerfile
@@ -1,6 +1,7 @@
 FROM debian:unstable
 
 RUN apt-get update -qq && apt-get install --no-install-recommends -qq -y \
+    desktop-file-utils \
     gettext \
     git \
     gtk-doc-tools \
@@ -8,6 +9,7 @@ RUN apt-get update -qq && apt-get install --no-install-recommends -qq -y \
     libadwaita-1-dev \
     libaccountsservice-dev \
     libappstream-dev \
+    libdbus-1-dev \
     libflatpak-dev \
     libgirepository1.0-dev \
     libglib2.0-dev \
@@ -28,7 +30,7 @@ RUN locale-gen C.UTF-8 && /usr/sbin/update-locale LANG=C.UTF-8
 
 ENV LANG=C.UTF-8 LANGUAGE=C.UTF-8 LC_ALL=C.UTF-8
 
-RUN pip3 install meson==0.57.0
+RUN pip3 install meson==0.59.4
 
 ARG HOST_USER_ID=5555
 ENV HOST_USER_ID ${HOST_USER_ID}
diff --git a/build-aux/meson_post_install.py b/build-aux/meson_post_install.py
deleted file mode 100644
index aefcadf..0000000
--- a/build-aux/meson_post_install.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-
-import os
-import subprocess
-
-install_prefix = os.environ['MESON_INSTALL_PREFIX']
-
-if not os.environ.get('DESTDIR'):
-    icon_cache_dir = os.path.join(install_prefix, 'share', 'icons', 'hicolor')
-    if os.path.exists(icon_cache_dir):
-        print('Updating icon cache…')
-        subprocess.call(['gtk-update-icon-cache', '-qtf', icon_cache_dir])
-
-    desktop_database_dir = os.path.join(install_prefix, 'share', 'applications')
-    if os.path.exists(desktop_database_dir):
-        print('Updating desktop database…')
-        subprocess.call(['update-desktop-database', '-q', desktop_database_dir])
diff --git a/meson.build b/meson.build
index 9cd327d..d6f65bf 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
 project('malcontent', 'c',
   version : '0.11.0',
-  meson_version : '>= 0.57.0',
+  meson_version : '>= 0.59.0',
   license: ['LGPL-2.1-or-later', 'GPL-2.0-or-later'],
   default_options : [
     'buildtype=debugoptimized',
@@ -146,8 +146,11 @@ endif
 subdir('malcontent-client')
 if get_option('ui').enabled()
   subdir('malcontent-control')
+
+  gnome.post_install(
+    gtk_update_icon_cache: true,
+    update_desktop_database: true,
+  )
 endif
 subdir('pam')
 subdir('po')
-
-meson.add_install_script('build-aux/meson_post_install.py')