diff --git a/.changeset/new-waves-rule.md b/.changeset/new-waves-rule.md
index abea57d81b..108e80274d 100644
--- a/.changeset/new-waves-rule.md
+++ b/.changeset/new-waves-rule.md
@@ -2,4 +2,5 @@
 '@backstage/core-app-api': patch
 ---
 
-Remove deprecated `@backstage/core-app-api@createApp` which has been replaced by `@backstage/app-defaults#createApp`
+- Remove deprecated `@backstage/core-app-api@createApp` which has been replaced by `@backstage/app-defaults#createApp`
+- Remove deprecated type `BackstagePluginWithAnyOutput`
diff --git a/packages/core-app-api/api-report.md b/packages/core-app-api/api-report.md
index e963f64465..55f87ec1eb 100644
--- a/packages/core-app-api/api-report.md
+++ b/packages/core-app-api/api-report.md
@@ -282,19 +282,6 @@ export type BackstageApp = {
   getRouter(): ComponentType<{}>;
 };
 
-// @public @deprecated
-export type BackstagePluginWithAnyOutput = Omit<
-  BackstagePlugin<any, any>,
-  'output'
-> & {
-  output(): (
-    | PluginOutput
-    | {
-        type: string;
-      }
-  )[];
-};
-
 // @public
 export class BitbucketAuth {
   // (undocumented)
diff --git a/packages/core-app-api/src/app/types.ts b/packages/core-app-api/src/app/types.ts
index a538ccd366..4b20aeff7e 100644
--- a/packages/core-app-api/src/app/types.ts
+++ b/packages/core-app-api/src/app/types.ts
@@ -203,29 +203,6 @@ export type AppRouteBinder = <
   >,
 ) => void;
 
-/**
- * Internal helper type that represents a plugin with any type of output.
- *
- * @public
- * @remarks
- * @deprecated Will be removed
- *
- * The `type: string` type is there to handle output from newer or older plugin
- * API versions that might not be supported by this version of the app API, but
- * we don't want to break at the type checking level. We only use this more
- * permissive type for the `createApp` options, as we otherwise want to stick
- * to using the type for the outputs that we know about in this version of the
- * app api.
- *
- * TODO(freben): This should be marked internal but that's not supported by the api report generation tools yet
- */
-export type BackstagePluginWithAnyOutput = Omit<
-  BackstagePlugin<any, any>,
-  'output'
-> & {
-  output(): (PluginOutput | { type: string })[];
-};
-
 /**
  * The options accepted by {@link createApp}.
  *