diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 32a6e0c9c..478fd753e 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -2201,6 +2201,10 @@ interface ShareData {
     url?: string;
 }
 
+interface ShowPopoverOptions {
+    source?: HTMLElement;
+}
+
 interface SpeechRecognitionErrorEventInit extends EventInit {
     error: SpeechRecognitionErrorCode;
     message?: string;
@@ -2316,6 +2320,10 @@ interface ToggleEventInit extends EventInit {
     source?: Element | null;
 }
 
+interface TogglePopoverOptions extends ShowPopoverOptions {
+    force?: boolean;
+}
+
 interface TouchEventInit extends EventModifierInit {
     changedTouches?: Touch[];
     targetTouches?: Touch[];
@@ -16104,13 +16112,13 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/showPopover)
      */
-    showPopover(): void;
+    showPopover(options?: ShowPopoverOptions): void;
     /**
      * The **`togglePopover()`** method of the HTMLElement interface toggles a popover element (i.e., one that has a valid popover attribute) between the hidden and showing states.
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/togglePopover)
      */
-    togglePopover(options?: boolean): boolean;
+    togglePopover(options?: TogglePopoverOptions | boolean): boolean;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.5/dom.generated.d.ts b/baselines/ts5.5/dom.generated.d.ts
index b811fd36b..bcb50ec39 100644
--- a/baselines/ts5.5/dom.generated.d.ts
+++ b/baselines/ts5.5/dom.generated.d.ts
@@ -2198,6 +2198,10 @@ interface ShareData {
     url?: string;
 }
 
+interface ShowPopoverOptions {
+    source?: HTMLElement;
+}
+
 interface SpeechRecognitionErrorEventInit extends EventInit {
     error: SpeechRecognitionErrorCode;
     message?: string;
@@ -2313,6 +2317,10 @@ interface ToggleEventInit extends EventInit {
     source?: Element | null;
 }
 
+interface TogglePopoverOptions extends ShowPopoverOptions {
+    force?: boolean;
+}
+
 interface TouchEventInit extends EventModifierInit {
     changedTouches?: Touch[];
     targetTouches?: Touch[];
@@ -16088,13 +16096,13 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/showPopover)
      */
-    showPopover(): void;
+    showPopover(options?: ShowPopoverOptions): void;
     /**
      * The **`togglePopover()`** method of the HTMLElement interface toggles a popover element (i.e., one that has a valid popover attribute) between the hidden and showing states.
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/togglePopover)
      */
-    togglePopover(options?: boolean): boolean;
+    togglePopover(options?: TogglePopoverOptions | boolean): boolean;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.6/dom.generated.d.ts b/baselines/ts5.6/dom.generated.d.ts
index 1056ef016..2426567bf 100644
--- a/baselines/ts5.6/dom.generated.d.ts
+++ b/baselines/ts5.6/dom.generated.d.ts
@@ -2198,6 +2198,10 @@ interface ShareData {
     url?: string;
 }
 
+interface ShowPopoverOptions {
+    source?: HTMLElement;
+}
+
 interface SpeechRecognitionErrorEventInit extends EventInit {
     error: SpeechRecognitionErrorCode;
     message?: string;
@@ -2313,6 +2317,10 @@ interface ToggleEventInit extends EventInit {
     source?: Element | null;
 }
 
+interface TogglePopoverOptions extends ShowPopoverOptions {
+    force?: boolean;
+}
+
 interface TouchEventInit extends EventModifierInit {
     changedTouches?: Touch[];
     targetTouches?: Touch[];
@@ -16101,13 +16109,13 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/showPopover)
      */
-    showPopover(): void;
+    showPopover(options?: ShowPopoverOptions): void;
     /**
      * The **`togglePopover()`** method of the HTMLElement interface toggles a popover element (i.e., one that has a valid popover attribute) between the hidden and showing states.
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/togglePopover)
      */
-    togglePopover(options?: boolean): boolean;
+    togglePopover(options?: TogglePopoverOptions | boolean): boolean;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/baselines/ts5.9/dom.generated.d.ts b/baselines/ts5.9/dom.generated.d.ts
index b5ea3418e..6780a4982 100644
--- a/baselines/ts5.9/dom.generated.d.ts
+++ b/baselines/ts5.9/dom.generated.d.ts
@@ -2198,6 +2198,10 @@ interface ShareData {
     url?: string;
 }
 
+interface ShowPopoverOptions {
+    source?: HTMLElement;
+}
+
 interface SpeechRecognitionErrorEventInit extends EventInit {
     error: SpeechRecognitionErrorCode;
     message?: string;
@@ -2313,6 +2317,10 @@ interface ToggleEventInit extends EventInit {
     source?: Element | null;
 }
 
+interface TogglePopoverOptions extends ShowPopoverOptions {
+    force?: boolean;
+}
+
 interface TouchEventInit extends EventModifierInit {
     changedTouches?: Touch[];
     targetTouches?: Touch[];
@@ -16101,13 +16109,13 @@ interface HTMLElement extends Element, ElementCSSInlineStyle, ElementContentEdit
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/showPopover)
      */
-    showPopover(): void;
+    showPopover(options?: ShowPopoverOptions): void;
     /**
      * The **`togglePopover()`** method of the HTMLElement interface toggles a popover element (i.e., one that has a valid popover attribute) between the hidden and showing states.
      *
      * [MDN Reference](https://developer.mozilla.org/docs/Web/API/HTMLElement/togglePopover)
      */
-    togglePopover(options?: boolean): boolean;
+    togglePopover(options?: TogglePopoverOptions | boolean): boolean;
     addEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | AddEventListenerOptions): void;
     addEventListener(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | AddEventListenerOptions): void;
     removeEventListener<K extends keyof HTMLElementEventMap>(type: K, listener: (this: HTMLElement, ev: HTMLElementEventMap[K]) => any, options?: boolean | EventListenerOptions): void;
diff --git a/inputfiles/overridingTypes.jsonc b/inputfiles/overridingTypes.jsonc
index eac1525cd..32683a28b 100644
--- a/inputfiles/overridingTypes.jsonc
+++ b/inputfiles/overridingTypes.jsonc
@@ -312,23 +312,6 @@
                             "nullable": false
                         }
                     }
-                },
-                "methods": {
-                    "method": {
-                        "togglePopover": {
-                            "signature": {
-                                "0": {
-                                    "param": [
-                                        {
-                                            // dictionary support is Blink only as of 2024-11
-                                            "name": "options",
-                                            "type": "boolean"
-                                        }
-                                    ]
-                                }
-                            }
-                        }
-                    }
                 }
             },
             "MediaMetadata": {
diff --git a/inputfiles/removedTypes.jsonc b/inputfiles/removedTypes.jsonc
index 347abb03e..e61a08339 100644
--- a/inputfiles/removedTypes.jsonc
+++ b/inputfiles/removedTypes.jsonc
@@ -157,19 +157,6 @@
                     }
                 }
             },
-            "HTMLElement": {
-                "methods": {
-                    "method": {
-                        "showPopover": {
-                            "signature": {
-                                "0": {
-                                    "param": ["options"] // Blink only as of 2024-11
-                                }
-                            }
-                        }
-                    }
-                }
-            },
             "IntersectionObserverEntry": {
                 "constructor": null // WebKit-only as of 2024-07
             },