diff --git a/installed-tests/fixtures/backend.js b/installed-tests/fixtures/backend.js
index cec523a21..d7eec1932 100644
--- a/installed-tests/fixtures/backend.js
+++ b/installed-tests/fixtures/backend.js
@@ -5,13 +5,23 @@
 'use strict';
 
 const Gio = imports.gi.Gio;
-const GioUnix = imports.gi.GioUnix;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 
 const Config = imports.config;
 const Core = imports.service.core;
 
+// Retain compatibility with GLib < 2.80, which lacks GioUnix
+let GioUnix;
+try {
+    GioUnix = imports.gi.GioUnix;
+} catch (e) {
+    GioUnix = {
+        InputStream: Gio.UnixInputStream,
+        OutputStream: Gio.UnixOutputStream,
+    };
+}
+
 
 /**
  * TCP Port Constants
diff --git a/src/service/backends/lan.js b/src/service/backends/lan.js
index b6526b8d3..4d321f7ff 100644
--- a/src/service/backends/lan.js
+++ b/src/service/backends/lan.js
@@ -5,13 +5,22 @@
 'use strict';
 
 const Gio = imports.gi.Gio;
-const GioUnix = imports.gi.GioUnix;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 
 const Config = imports.config;
 const Core = imports.service.core;
 
+// Retain compatibility with GLib < 2.80, which lacks GioUnix
+let GioUnix;
+try {
+    GioUnix = imports.gi.GioUnix;
+} catch (e) {
+    GioUnix = {
+        InputStream: Gio.UnixInputStream,
+        OutputStream: Gio.UnixOutputStream,
+    };
+}
 
 /**
  * TCP Port Constants
diff --git a/src/service/nativeMessagingHost.js b/src/service/nativeMessagingHost.js
index f06d33e51..c7711b754 100755
--- a/src/service/nativeMessagingHost.js
+++ b/src/service/nativeMessagingHost.js
@@ -12,11 +12,21 @@ imports.gi.versions.GLib = '2.0';
 imports.gi.versions.GObject = '2.0';
 
 const Gio = imports.gi.Gio;
-const GioUnix = imports.gi.GioUnix;
 const GLib = imports.gi.GLib;
 const GObject = imports.gi.GObject;
 const System = imports.system;
 
+// Retain compatibility with GLib < 2.80, which lacks GioUnix
+let GioUnix;
+try {
+    GioUnix = imports.gi.GioUnix;
+} catch (e) {
+    GioUnix = {
+        InputStream: Gio.UnixInputStream,
+        OutputStream: Gio.UnixOutputStream,
+    };
+}
+
 
 const NativeMessagingHost = GObject.registerClass({
     GTypeName: 'GSConnectNativeMessagingHost',