diff --git a/wlroots/ffi_build.py b/wlroots/ffi_build.py
index fd2fd7b6..f0d9b15d 100644
--- a/wlroots/ffi_build.py
+++ b/wlroots/ffi_build.py
@@ -1891,6 +1891,9 @@ def has_xwayland() -> bool:
 void wlr_scene_buffer_set_transform(struct wlr_scene_buffer *scene_buffer,
     enum wl_output_transform transform);
 
+void wlr_scene_buffer_set_opacity(struct wlr_scene_buffer *scene_buffer,
+    float opacity);
+
 void wlr_scene_buffer_set_corner_radius(struct wlr_scene_buffer *scene_buffer,
     int radii);
 
diff --git a/wlroots/wlr_types/scene.py b/wlroots/wlr_types/scene.py
index 50e081eb..78eefa9a 100644
--- a/wlroots/wlr_types/scene.py
+++ b/wlroots/wlr_types/scene.py
@@ -186,6 +186,9 @@ def set_buffer_with_damage(
     def set_corner_radius(self, radii: int) -> None:
         lib.wlr_scene_buffer_set_corner_radius(self._ptr, radii)
 
+    def set_opacity(self, opacity: float) -> None:
+        lib.wlr_scene_buffer_set_opacity(self._ptr, opacity)
+
 
 T = TypeVar("T")
 BufferCallback = Callable[[SceneBuffer, int, int, T], None]