diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,11 @@
 # Changelog for gtk-sni-tray
 
+## 0.1.9.1
+
+- Fix type error with DM.Menu and Gtk.menuPopupAtWidget by adding explicit
+  cast to Gtk.Menu. This fixes build failures with newer GI bindings where the
+  type hierarchy is not automatically recognized.
+
 ## 0.1.9.0
 
 - Use the `gi-gtk3` and `gi-gdk3` build dependencies, which have been
diff --git a/gtk-sni-tray.cabal b/gtk-sni-tray.cabal
--- a/gtk-sni-tray.cabal
+++ b/gtk-sni-tray.cabal
@@ -1,11 +1,11 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.38.2.
+-- This file has been generated from package.yaml by hpack version 0.38.3.
 --
 -- see: https://github.com/sol/hpack
 
 name:           gtk-sni-tray
-version:        0.1.9.0
+version:        0.1.9.1
 synopsis:       A standalone StatusNotifierItem/AppIndicator tray
 description:    Please see the README on Github at <https://github.com/IvanMalison/gtk-sni-tray#readme>
 category:       System
diff --git a/src/StatusNotifier/Tray.hs b/src/StatusNotifier/Tray.hs
--- a/src/StatusNotifier/Tray.hs
+++ b/src/StatusNotifier/Tray.hs
@@ -15,6 +15,7 @@
 import qualified Data.ByteString as BS
 import           Data.Coerce
 import           Data.Foldable (traverse_)
+import           Data.GI.Base (unsafeCastTo)
 import           Data.GI.Base.GError
 import           Data.Int
 import           Data.List
@@ -358,8 +359,10 @@
                             , contextImage = image
                             , contextButton = button
                             }
-              popupItemForMenu menu =
-                Gtk.menuPopupAtWidget menu image
+              popupItemForMenu menu = do
+                -- Cast DM.Menu to Gtk.Menu for menuPopupAtWidget
+                gtkMenu <- unsafeCastTo Gtk.Menu menu
+                Gtk.menuPopupAtWidget gtkMenu image
                    GravitySouthWest GravityNorthWest Nothing
 
           _ <- Gtk.onWidgetButtonPressEvent button $ \event -> do