diff --git a/io.github.shiiion.primehack.yml b/io.github.shiiion.primehack.yml
index 52f9b8f..47d700e 100644
--- a/io.github.shiiion.primehack.yml
+++ b/io.github.shiiion.primehack.yml
@@ -20,6 +20,8 @@ finish-args:
   - --allow=bluetooth
   - --filesystem=xdg-run/app/com.discordapp.Discord:create
   - --talk-name=org.freedesktop.ScreenSaver
+  # required for Gamescope on Steam Deck
+  - --filesystem=xdg-run/gamescope-0:ro
 modules:
   # needed for the bluetooth passthrough feature to work
   - name: libusb