diff --git a/build-aux/flatpak/org.gnome.NetworkDisplays.json b/build-aux/flatpak/org.gnome.NetworkDisplays.json
index bed55f797e39fca5772dd3c039bff0e0b8283a4d..83f294c8a2423f516a7da12ef0dc129f33b1d28d 100644
--- a/build-aux/flatpak/org.gnome.NetworkDisplays.json
+++ b/build-aux/flatpak/org.gnome.NetworkDisplays.json
@@ -225,7 +225,8 @@
             "sources" : [
                 {
                     "type" : "git",
-                    "url" : "https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git"
+                    "url" : "https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git",
+                    "branch" : "main"
                 }
             ]
         },