diff --git a/src/vs/workbench/contrib/chat/browser/chatContentParts/chatMarkdownContentPart.ts b/src/vs/workbench/contrib/chat/browser/chatContentParts/chatMarkdownContentPart.ts
index aad084c2bb288..44c0c0dbb6b46 100644
--- a/src/vs/workbench/contrib/chat/browser/chatContentParts/chatMarkdownContentPart.ts
+++ b/src/vs/workbench/contrib/chat/browser/chatContentParts/chatMarkdownContentPart.ts
@@ -287,7 +287,7 @@ class CollapsedCodeBlock extends Disposable {
 		return this._uri;
 	}
 
-	private readonly _progressStore = new DisposableStore();
+	private readonly _progressStore = this._store.add(new DisposableStore());
 
 	constructor(
 		sessionId: string,