diff --git a/crates/web-sys/src/features/gen_TaskController.rs b/crates/web-sys/src/features/gen_TaskController.rs
index f108a34c42c..3dcb523db71 100644
--- a/crates/web-sys/src/features/gen_TaskController.rs
+++ b/crates/web-sys/src/features/gen_TaskController.rs
@@ -41,7 +41,7 @@ extern "C" {
     pub fn new_with_init(init: &TaskControllerInit) -> Result<TaskController, JsValue>;
     #[cfg(web_sys_unstable_apis)]
     #[cfg(feature = "TaskPriority")]
-    # [wasm_bindgen (method , structural , js_class = "TaskController" , js_name = setPriority)]
+    # [wasm_bindgen (catch , method , structural , js_class = "TaskController" , js_name = setPriority)]
     #[doc = "The `setPriority()` method."]
     #[doc = ""]
     #[doc = "[MDN Documentation](https://developer.mozilla.org/en-US/docs/Web/API/TaskController/setPriority)"]
@@ -50,5 +50,5 @@ extern "C" {
     #[doc = ""]
     #[doc = "*This API is unstable and requires `--cfg=web_sys_unstable_apis` to be activated, as"]
     #[doc = "[described in the `wasm-bindgen` guide](https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html)*"]
-    pub fn set_priority(this: &TaskController, priority: TaskPriority);
+    pub fn set_priority(this: &TaskController, priority: TaskPriority) -> Result<(), JsValue>;
 }
diff --git a/crates/web-sys/webidls/unstable/scheduling-apis.webidl b/crates/web-sys/webidls/unstable/scheduling-apis.webidl
index ff89281519c..b63aff54629 100644
--- a/crates/web-sys/webidls/unstable/scheduling-apis.webidl
+++ b/crates/web-sys/webidls/unstable/scheduling-apis.webidl
@@ -37,6 +37,7 @@ dictionary TaskControllerInit {
 interface TaskController : AbortController {
   constructor(optional TaskControllerInit init = {});
 
+  [Throws]
   undefined setPriority(TaskPriority priority);
 };