diff --git a/build-aux/flatpak/org.qelectrotech.QElectroTech.json b/build-aux/flatpak/org.qelectrotech.QElectroTech.json
index 97916f3a4..d9961b5df 100644
--- a/build-aux/flatpak/org.qelectrotech.QElectroTech.json
+++ b/build-aux/flatpak/org.qelectrotech.QElectroTech.json
@@ -13,6 +13,7 @@
     "--socket=fallback-x11",
     "--device=dri",
     "--share=ipc",
+    "--socket=cups",
     "--filesystem=host"
   ],
   "modules": [