diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6aa0a08..d710de15 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -182,7 +182,8 @@ endif()
 
 find_package(EXPAT)
 find_package(X11)
-find_package(GLIB2)
+set(GLIB_MIN_VERSION 2.72) # for AF_UNIX
+find_package(GLIB2 ${GLIB_MIN_VERSION})
 if(GLIB2_FOUND)
     option(DBUS_WITH_GLIB "build with glib" ON)
 endif()
diff --git a/meson.build b/meson.build
index 7281b7ec..6ac73a3c 100644
--- a/meson.build
+++ b/meson.build
@@ -397,11 +397,12 @@ endif
 # a running dbus-daemon will be disabled if message_bus is not set.
 message_bus = get_option('message_bus')
 
+minimum_glib = '2.72'    # for AF_UNIX
 if get_option('modular_tests').disabled()
     glib = dependency('', required: false)
 else
     glib = dependency(
-        'glib-2.0', version: '>=2.40',
+        'glib-2.0', version: '>=' + minimum_glib,
         required: get_option('modular_tests'),
         fallback: ['glib', 'libglib_dep'],
         default_options: fallback_subproject_options + [