diff --git a/nixos/modules/services/x11/desktop-managers/cinnamon.nix b/nixos/modules/services/x11/desktop-managers/cinnamon.nix
index 43220e3c5952..d3c03a7e3701 100644
--- a/nixos/modules/services/x11/desktop-managers/cinnamon.nix
+++ b/nixos/modules/services/x11/desktop-managers/cinnamon.nix
@@ -137,6 +137,9 @@ in
         # cinnamon-killer-daemon: provided by cinnamon-common
         gnome.networkmanagerapplet # session requirement - also nm-applet not needed
 
+        # For a polkit authentication agent
+        polkit_gnome
+
         # packages
         nemo
         cinnamon-control-center