diff --git a/packages/frontend-app-api/src/wiring/createExtensionInstance.ts b/packages/frontend-app-api/src/wiring/createExtensionInstance.ts
index 2cae60c1e6..52afe95121 100644
--- a/packages/frontend-app-api/src/wiring/createExtensionInstance.ts
+++ b/packages/frontend-app-api/src/wiring/createExtensionInstance.ts
@@ -23,6 +23,8 @@ import mapValues from 'lodash/mapValues';
 
 /** @internal */
 export interface ExtensionInstance {
+  readonly $$type: '@backstage/ExtensionInstance';
+
   readonly id: string;
   /**
    * Get concrete value for the given extension data reference. Returns undefined if no value is available.
@@ -32,7 +34,6 @@ export interface ExtensionInstance {
    * Maps input names to the actual instances given to them.
    */
   readonly attachments: Map<string, ExtensionInstance[]>;
-  readonly $$type: 'extension-instance';
 }
 
 /** @internal */
@@ -86,12 +87,12 @@ export function createExtensionInstance(options: {
   }
 
   return {
+    $$type: '@backstage/ExtensionInstance',
     id: options.extension.id,
     getData<T>(ref: ExtensionDataRef<T>): T | undefined {
       return extensionData.get(ref.id) as T | undefined;
     },
 
     attachments,
-    $$type: 'extension-instance',
   };
 }
diff --git a/packages/frontend-plugin-api/api-report.md b/packages/frontend-plugin-api/api-report.md
index 2959dcb92e..3a0a3bf357 100644
--- a/packages/frontend-plugin-api/api-report.md
+++ b/packages/frontend-plugin-api/api-report.md
@@ -24,7 +24,7 @@ export type AnyExtensionDataMap = {
 // @public (undocumented)
 export interface BackstagePlugin {
   // (undocumented)
-  $$type: 'backstage-plugin';
+  $$type: '@backstage/BackstagePlugin';
   // (undocumented)
   extensions: Extension<unknown>[];
   // (undocumented)
@@ -176,7 +176,7 @@ export function createSchemaFromZod<TOutput, TInput>(
 // @public (undocumented)
 export interface Extension<TConfig> {
   // (undocumented)
-  $$type: 'extension';
+  $$type: '@backstage/Extension';
   // (undocumented)
   at: string;
   // (undocumented)
@@ -268,7 +268,7 @@ export type ExtensionDataRef<
   id: string;
   T: TData;
   config: TConfig;
-  $$type: 'extension-data';
+  $$type: '@backstage/ExtensionDataRef';
 };
 
 // @public (undocumented)
diff --git a/packages/frontend-plugin-api/src/wiring/createExtension.ts b/packages/frontend-plugin-api/src/wiring/createExtension.ts
index bcea03595b..1a7e02804e 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtension.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtension.ts
@@ -87,7 +87,7 @@ export function createExtension<
   return {
     ...options,
     disabled: options.disabled ?? false,
-    $$type: 'extension',
+    $$type: '@backstage/Extension',
     inputs: options.inputs ?? {},
     factory({ bind, config, inputs }) {
       // TODO: Simplify this, but TS wouldn't infer the input type for some reason
diff --git a/packages/frontend-plugin-api/src/wiring/createExtensionDataRef.ts b/packages/frontend-plugin-api/src/wiring/createExtensionDataRef.ts
index 6d6309bee4..d0d96e85f9 100644
--- a/packages/frontend-plugin-api/src/wiring/createExtensionDataRef.ts
+++ b/packages/frontend-plugin-api/src/wiring/createExtensionDataRef.ts
@@ -22,7 +22,7 @@ export type ExtensionDataRef<
   id: string;
   T: TData;
   config: TConfig;
-  $$type: 'extension-data';
+  $$type: '@backstage/ExtensionDataRef';
 };
 
 /** @public */
@@ -40,7 +40,7 @@ export function createExtensionDataRef<TData>(
 ): ConfigurableExtensionDataRef<TData> {
   return {
     id,
-    $$type: 'extension-data',
+    $$type: '@backstage/ExtensionDataRef',
     config: {},
     optional() {
       return { ...this, config: { ...this.config, optional: true } };
diff --git a/packages/frontend-plugin-api/src/wiring/createPlugin.ts b/packages/frontend-plugin-api/src/wiring/createPlugin.ts
index 7f7e44ff03..bb372f63c1 100644
--- a/packages/frontend-plugin-api/src/wiring/createPlugin.ts
+++ b/packages/frontend-plugin-api/src/wiring/createPlugin.ts
@@ -24,7 +24,7 @@ export interface PluginOptions {
 
 /** @public */
 export interface BackstagePlugin {
-  $$type: 'backstage-plugin';
+  $$type: '@backstage/BackstagePlugin';
   id: string;
   extensions: Extension<unknown>[];
 }
@@ -33,7 +33,7 @@ export interface BackstagePlugin {
 export function createPlugin(options: PluginOptions): BackstagePlugin {
   return {
     ...options,
-    $$type: 'backstage-plugin',
+    $$type: '@backstage/BackstagePlugin',
     extensions: options.extensions ?? [],
   };
 }
diff --git a/packages/frontend-plugin-api/src/wiring/types.ts b/packages/frontend-plugin-api/src/wiring/types.ts
index dbe4633ff5..46b76e30f4 100644
--- a/packages/frontend-plugin-api/src/wiring/types.ts
+++ b/packages/frontend-plugin-api/src/wiring/types.ts
@@ -26,7 +26,7 @@ export type AnyExtensionDataMap = {
 
 /** @public */
 export interface Extension<TConfig> {
-  $$type: 'extension';
+  $$type: '@backstage/Extension';
   id: string;
   at: string;
   disabled: boolean;