diff --git a/packages/core-app-api/api-report.md b/packages/core-app-api/api-report.md
index 48b89a6951..cb6ad27cf8 100644
--- a/packages/core-app-api/api-report.md
+++ b/packages/core-app-api/api-report.md
@@ -126,7 +126,7 @@ export type ApiProviderProps = {
   children: ReactNode;
 };
 
-// @public
+// @public @deprecated
 export class ApiRegistry implements ApiHolder {
   constructor(apis: Map<string, unknown>);
   // Warning: (ae-forgotten-export) The symbol "ApiRegistryBuilder" needs to be exported by the entry point index.d.ts
diff --git a/packages/core-app-api/src/apis/system/ApiRegistry.ts b/packages/core-app-api/src/apis/system/ApiRegistry.ts
index 29c8b1cfe4..2d12fcfb35 100644
--- a/packages/core-app-api/src/apis/system/ApiRegistry.ts
+++ b/packages/core-app-api/src/apis/system/ApiRegistry.ts
@@ -36,6 +36,7 @@ class ApiRegistryBuilder {
  * A registry for utility APIs.
  *
  * @public
+ * @deprecated Will be removed, use {@link @backstage/test-utils#TestApiProvider} instead.
  */
 export class ApiRegistry implements ApiHolder {
   static builder() {