diff --git a/CHANGELOG.md b/CHANGELOG.md
index 275dd107e9..10baa3dd34 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## 0.154.0
+
+### Changes
+
+- Back off polling for pull request updates when no changes are found, reducing unnecessary requests.
+
 ## 0.152.0
 
 ### Fixes
diff --git a/package-lock.json b/package-lock.json
index 73032f0ce0..0798e61a66 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "vscode-pull-request-github",
-	"version": "0.152.0",
+	"version": "0.154.0",
 	"lockfileVersion": 3,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "vscode-pull-request-github",
-			"version": "0.152.0",
+			"version": "0.154.0",
 			"hasInstallScript": true,
 			"license": "MIT",
 			"dependencies": {
diff --git a/package.json b/package.json
index cde0edd92f..3646a99ff8 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
 		"treeItemMarkdownLabel",
 		"treeViewMarkdownMessage"
 	],
-	"version": "0.152.0",
+	"version": "0.154.0",
 	"publisher": "GitHub",
 	"engines": {
 		"node": ">=20",
diff --git a/src/@types/vscode.proposed.chatParticipantAdditions.d.ts b/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
index c9d6832fdd..567c509670 100644
--- a/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
+++ b/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
@@ -442,6 +442,7 @@ declare module 'vscode' {
 		ChatResponseThinkingProgressPart: ChatResponseThinkingProgressPart;
 		ChatResponseExternalEditPart: ChatResponseExternalEditPart;
 		ChatResponseQuestionCarouselPart: ChatResponseQuestionCarouselPart;
+		ChatResponseAutoModeResolutionPart: ChatResponseAutoModeResolutionPart;
 	}
 
 	export type ExtendedChatResponsePart = ExtendedChatResponseParts[keyof ExtendedChatResponseParts];
@@ -566,6 +567,22 @@ declare module 'vscode' {
 		constructor(uriOrCommand: Uri | Command, title: string, description: string, author: string, linkTag: string);
 	}
 
+	/**
+	 * Represents an auto-mode model routing resolution. Displayed as a collapsible
+	 * widget in the chat stream showing which model was selected and why.
+	 */
+	export class ChatResponseAutoModeResolutionPart {
+		/** The model ID that was selected by the router */
+		resolvedModel: string;
+		/** The user-facing display name of the resolved model */
+		resolvedModelName: string;
+		/** The router's classification label */
+		predictedLabel: string;
+		/** Confidence score (0-1) from the router */
+		confidence: number;
+		constructor(resolvedModel: string, resolvedModelName: string, predictedLabel: string, confidence: number);
+	}
+
 	export interface ChatResponseStream {
 
 		/**