diff --git a/manifest b/manifest
index eeba2e45..c70e4087 100644
--- a/manifest
+++ b/manifest
@@ -322,6 +322,7 @@ postinstallhook() {
 	# force -steamdeck option in desktop mode to prevent constant steam updates
 	sed -i 's,Exec=/usr/bin/steam-runtime,Exec=/usr/bin/steam-runtime -steamdeck,' /usr/share/applications/steam.desktop
 
-	# set permissions for intel_gpu_top and mangohud
+	# set permissions for intel_gpu_top and gamescope
 	setcap cap_perfmon=+ep /usr/bin/intel_gpu_top
+	setcap 'CAP_SYS_NICE=eip' /usr/bin/gamescope
 }