diff --git a/pkgs/applications/gis/qgis/unwrapped-ltr.nix b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
index af4fdd4abb68..30836c4ed609 100644
--- a/pkgs/applications/gis/qgis/unwrapped-ltr.nix
+++ b/pkgs/applications/gis/qgis/unwrapped-ltr.nix
@@ -54,6 +54,7 @@ let
     packageOverrides = self: super: {
       pyqt5 = super.pyqt5.override {
         withLocation = true;
+        withSerialPort = true;
       };
     };
   };