diff --git a/VERSION b/VERSION
index e9a9503b4c..522a7db775 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.63.0-beta.19
+0.63.1-beta.19
diff --git a/ryoku/CHANGELOG.md b/ryoku/CHANGELOG.md
index 99724e14e5..d500630463 100644
--- a/ryoku/CHANGELOG.md
+++ b/ryoku/CHANGELOG.md
@@ -59,6 +59,14 @@
   `shell/matugen/apps.toml`, `shell/ipc/matugen.go`, `../hub/backend/matugen.go`).
 
 ### Fixed
+- **Niri screen sharing works with the GNOME portal again.** Ryoku's
+  `GDK_BACKEND=wayland,x11,*` preference was inherited by
+  `xdg-desktop-portal-gnome`, which then treated the Niri session as an
+  incompatible display server and exposed Settings only, leaving OBS,
+  browsers and Electron clients without a ScreenCast backend. The portal
+  service now drops only `GDK_BACKEND`, while normal GTK applications keep
+  Ryoku's Wayland-first preference
+  (`shell/systemd/user/xdg-desktop-portal-gnome.service.d/10-ryoku.conf`).
 - **The gap stream clears when it stops instead of freezing a frame.** A silent
   bar with no drift left the last shader frame stuck in the gaps; it now hides,
   so the stream reads as off, then on when audio returns
diff --git a/ryoku/shell/systemd/user/xdg-desktop-portal-gnome.service.d/10-ryoku.conf b/ryoku/shell/systemd/user/xdg-desktop-portal-gnome.service.d/10-ryoku.conf
new file mode 100644
index 0000000000..5b091e7d87
--- /dev/null
+++ b/ryoku/shell/systemd/user/xdg-desktop-portal-gnome.service.d/10-ryoku.conf
@@ -0,0 +1,9 @@
+# Ryoku prefers Wayland for GTK applications through GDK_BACKEND, but
+# xdg-desktop-portal-gnome uses the presence of that override when deciding
+# whether it is running on a compatible GNOME/Niri session. When inherited
+# under Niri it exposes Settings only and drops the ScreenCast interface.
+#
+# Keep the application-wide preference while removing it only from this
+# portal backend.
+[Service]
+UnsetEnvironment=GDK_BACKEND