diff --git a/package.json b/package.json
index e6e68b5be0..7a09f768ad 100644
--- a/package.json
+++ b/package.json
@@ -3686,7 +3686,7 @@
 		"@octokit/rest": "18.2.1",
 		"@octokit/types": "6.10.1",
 		"@vscode/extension-telemetry": "0.7.5",
-		"@vscode/prompt-tsx": "^0.3.0-alpha",
+		"@vscode/prompt-tsx": "^0.3.0-alpha.11",
 		"apollo-boost": "^0.4.9",
 		"apollo-link-context": "1.0.20",
 		"cockatiel": "^3.1.1",
diff --git a/src/lm/participants.ts b/src/lm/participants.ts
index e5f123cb9e..35ae0487a7 100644
--- a/src/lm/participants.ts
+++ b/src/lm/participants.ts
@@ -100,7 +100,7 @@ export class ChatParticipant implements vscode.Disposable {
 			{ modelMaxPromptTokens: model.maxInputTokens },
 			model);
 
-		this.state.addMessages(messages as any);
+		this.state.addMessages(messages);
 
 		const toolReferences = [...request.toolReferences];
 		const options: vscode.LanguageModelChatRequestOptions = {
@@ -165,6 +165,7 @@ export class ChatParticipant implements vscode.Disposable {
 						const part = toolCallResult.content[i];
 						if (!(part instanceof vscode.LanguageModelTextPart)) {
 							// We only support text results for now, will change when we finish adopting prompt-tsx
+							result = new vscode.LanguageModelToolResultPart(toolCall.call.callId, toolCallResult.content);
 							continue;
 						}
 
diff --git a/yarn.lock b/yarn.lock
index 3b5e0efac3..d1bdc44556 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -791,10 +791,10 @@
     "@microsoft/applicationinsights-web-basic" "^2.8.9"
     applicationinsights "2.4.1"
 
-"@vscode/prompt-tsx@^0.3.0-alpha":
-  version "0.3.0-alpha.8"
-  resolved "https://registry.yarnpkg.com/@vscode/prompt-tsx/-/prompt-tsx-0.3.0-alpha.8.tgz#94de46269bd054e6ad2f3dfe613f85d9c66e7f0c"
-  integrity sha512-uhGZve/mhrSkFNU1zvhcbbPL8laT8Ytlk3q5sswE8XnveiCb7eANk7Ea4IkKI3KvbThX3p3cl3xOauHuqrhlSg==
+"@vscode/prompt-tsx@^0.3.0-alpha.11":
+  version "0.3.0-alpha.11"
+  resolved "https://registry.yarnpkg.com/@vscode/prompt-tsx/-/prompt-tsx-0.3.0-alpha.11.tgz#32b2e7df6263defd7da7a33a439b4259768a65c1"
+  integrity sha512-ThJinCs/eIaAqof8GcI6VUuY16XWiiEST1+gZOlR0vJP6vg4HzM/sUWDHGWHk/jwiYpffiAFgDpbfzuhr4seRw==
 
 "@vscode/test-electron@^2.3.8":
   version "2.3.8"