diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 112a707d5..656b7c34a 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -19766,8 +19766,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/serviceworker.generated.d.ts b/baselines/serviceworker.generated.d.ts
index 02b5f0403..368fbe6d9 100644
--- a/baselines/serviceworker.generated.d.ts
+++ b/baselines/serviceworker.generated.d.ts
@@ -5024,8 +5024,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/sharedworker.generated.d.ts b/baselines/sharedworker.generated.d.ts
index 5bb63c4f4..b8a7374d2 100644
--- a/baselines/sharedworker.generated.d.ts
+++ b/baselines/sharedworker.generated.d.ts
@@ -4707,8 +4707,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index 566f7f4bd..c39acaf3d 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -19745,8 +19745,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.5/serviceworker.generated.d.ts b/baselines/ts5.5/serviceworker.generated.d.ts
index 295e1756e..31511f497 100644
--- a/baselines/ts5.5/serviceworker.generated.d.ts
+++ b/baselines/ts5.5/serviceworker.generated.d.ts
@@ -5024,8 +5024,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.5/sharedworker.generated.d.ts b/baselines/ts5.5/sharedworker.generated.d.ts
index 4fb5c5f83..698b8672c 100644
--- a/baselines/ts5.5/sharedworker.generated.d.ts
+++ b/baselines/ts5.5/sharedworker.generated.d.ts
@@ -4707,8 +4707,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.5/webworker.generated.d.ts b/baselines/ts5.5/webworker.generated.d.ts
index 63867da88..bb91c1c93 100644
--- a/baselines/ts5.5/webworker.generated.d.ts
+++ b/baselines/ts5.5/webworker.generated.d.ts
@@ -5853,8 +5853,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index 9997a7f0b..6969adf43 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -19766,8 +19766,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.6/serviceworker.generated.d.ts b/baselines/ts5.6/serviceworker.generated.d.ts
index 295e1756e..31511f497 100644
--- a/baselines/ts5.6/serviceworker.generated.d.ts
+++ b/baselines/ts5.6/serviceworker.generated.d.ts
@@ -5024,8 +5024,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.6/sharedworker.generated.d.ts b/baselines/ts5.6/sharedworker.generated.d.ts
index 4fb5c5f83..698b8672c 100644
--- a/baselines/ts5.6/sharedworker.generated.d.ts
+++ b/baselines/ts5.6/sharedworker.generated.d.ts
@@ -4707,8 +4707,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/ts5.6/webworker.generated.d.ts b/baselines/ts5.6/webworker.generated.d.ts
index 63867da88..bb91c1c93 100644
--- a/baselines/ts5.6/webworker.generated.d.ts
+++ b/baselines/ts5.6/webworker.generated.d.ts
@@ -5853,8 +5853,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/baselines/webworker.generated.d.ts b/baselines/webworker.generated.d.ts
index 41d032889..995d605a3 100644
--- a/baselines/webworker.generated.d.ts
+++ b/baselines/webworker.generated.d.ts
@@ -5853,8 +5853,8 @@ interface LockManager {
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/LockManager/request)
      */
-    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<T>;
-    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<T>;
+    request<T>(name: string, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
+    request<T>(name: string, options: LockOptions, callback: LockGrantedCallback<T>): Promise<Awaited<T>>;
 }
 
 declare var LockManager: {
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index 8a7e0851f..88e65d2f1 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -3529,7 +3529,7 @@
                                             "overrideType": "LockGrantedCallback<T>"
                                         }
                                     ],
-                                    "overrideType": "Promise<T>"
+                                    "overrideType": "Promise<Awaited<T>>"
                                 },
                                 "1": {
                                     "typeParameters": [
@@ -3543,7 +3543,7 @@
                                             "overrideType": "LockGrantedCallback<T>"
                                         }
                                     ],
-                                    "overrideType": "Promise<T>"
+                                    "overrideType": "Promise<Awaited<T>>"
                                 }
                             }
                         }