diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 9d247a7eb42..944c07042f1 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1494,6 +1494,7 @@ declare module 'vscode' {
 
 		// UI properties (get/set)
 		label: string;
+		detail?: string;
 		description?: string;
 		isPreferred?: boolean;
 
diff --git a/src/vs/workbench/api/browser/mainThreadNotebookKernels.ts b/src/vs/workbench/api/browser/mainThreadNotebookKernels.ts
index 8306de1f23a..634337e1bd3 100644
--- a/src/vs/workbench/api/browser/mainThreadNotebookKernels.ts
+++ b/src/vs/workbench/api/browser/mainThreadNotebookKernels.ts
@@ -51,6 +51,7 @@ abstract class MainThreadKernel implements INotebookKernel2 {
 		this.implementsInterrupt = data.supportsInterrupt ?? false;
 		this.label = data.label;
 		this.description = data.description;
+		this.detail = data.detail;
 		this.isPreferred = data.isPreferred;
 		this.supportedLanguages = data.supportedLanguages;
 		this.implementsExecutionOrder = data.hasExecutionOrder ?? false;
@@ -69,6 +70,10 @@ abstract class MainThreadKernel implements INotebookKernel2 {
 			this.description = data.description;
 			event.description = true;
 		}
+		if (data.detail !== undefined) {
+			this.detail = data.detail;
+			event.detail = true;
+		}
 		if (data.isPreferred !== undefined) {
 			this.isPreferred = data.isPreferred;
 			event.isPreferred = true;
diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index 3b2a20810b9..4cdb1219e54 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -914,6 +914,7 @@ export interface INotebookKernelDto2 {
 	extensionId: ExtensionIdentifier;
 	extensionLocation: UriComponents;
 	label: string;
+	detail?: string;
 	description?: string;
 	isPreferred?: boolean;
 	supportedLanguages: string[];
diff --git a/src/vs/workbench/api/common/extHostNotebookKernels.ts b/src/vs/workbench/api/common/extHostNotebookKernels.ts
index 9430414832b..70dc43ba78b 100644
--- a/src/vs/workbench/api/common/extHostNotebookKernels.ts
+++ b/src/vs/workbench/api/common/extHostNotebookKernels.ts
@@ -106,6 +106,13 @@ export class ExtHostNotebookKernels implements ExtHostNotebookKernelsShape {
 				data.label = value ?? extension.displayName ?? extension.name;
 				_update();
 			},
+			get detail() {
+				return data.detail ?? '';
+			},
+			set detail(value) {
+				data.detail = value;
+				_update();
+			},
 			get description() {
 				return data.description ?? '';
 			},