diff --git a/packages/schematics/angular/utility/workspace-models.ts b/packages/schematics/angular/utility/workspace-models.ts
index 5eea18caa562..25247ad9fddb 100644
--- a/packages/schematics/angular/utility/workspace-models.ts
+++ b/packages/schematics/angular/utility/workspace-models.ts
@@ -73,7 +73,13 @@ export interface BrowserBuilderOptions extends BrowserBuilderBaseOptions {
 }
 
 export interface ServeBuilderOptions {
+  /**
+   * @deprecated not used since version 17.0.0. Use the property "buildTarget" instead.
+   */
   browserTarget: string;
+
+  // TODO: make it required, when the deprecated property "browserTarget" is removed.
+  buildTarget?: string;
 }
 export interface LibraryBuilderOptions {
   tsConfig: string;