diff --git a/__nix-prepend-search-paths.js b/__nix-prepend-search-paths.js
new file mode 100644
index 0000000..bf3071b
--- /dev/null
+++ b/__nix-prepend-search-paths.js
@@ -0,0 +1,3 @@
+import GIRepository from 'gi://GIRepository';
+GIRepository.Repository.prepend_search_path('@gsound@/lib/girepository-1.0');
+GIRepository.Repository.prepend_search_path('@libgda@/lib/girepository-1.0');
diff --git a/extension.js b/extension.js
index a3d6741..6a38850 100644
--- a/extension.js
+++ b/extension.js
@@ -1,3 +1,4 @@
+import './__nix-prepend-search-paths.js';
 import Gio from 'gi://Gio';
 import GLib from 'gi://GLib';
 import Shell from 'gi://Shell';
diff --git a/prefs.js b/prefs.js
index 5dd94eb..634b2ef 100644
--- a/prefs.js
+++ b/prefs.js
@@ -1,3 +1,4 @@
+import './__nix-prepend-search-paths.js';
 import Gdk from 'gi://Gdk';
 import Gtk from 'gi://Gtk';
 import { ExtensionPreferences } from 'resource:///org/gnome/Shell/Extensions/js/extensions/prefs.js';