diff --git a/plugins/sentry-backend/.eslintrc.js b/plugins/sentry-backend/.eslintrc.js
deleted file mode 100644
index 16a033dbc6..0000000000
--- a/plugins/sentry-backend/.eslintrc.js
+++ /dev/null
@@ -1,3 +0,0 @@
-module.exports = {
-  extends: [require.resolve('@backstage/cli/config/eslint.backend')],
-};
diff --git a/plugins/sentry-backend/CHANGELOG.md b/plugins/sentry-backend/CHANGELOG.md
deleted file mode 100644
index 9ddc9e1005..0000000000
--- a/plugins/sentry-backend/CHANGELOG.md
+++ /dev/null
@@ -1,97 +0,0 @@
-# @backstage/plugin-sentry-backend
-
-## 0.2.0
-
-### Minor Changes
-
-- 075d3dc5a: The plugin uses the `proxy-backend` instead of a custom `sentry-backend`.
-  It requires a proxy configuration:
-
-  `app-config.yaml`:
-
-  ```yaml
-  proxy:
-    '/sentry/api':
-      target: https://sentry.io/api/
-      allowedMethods: ['GET']
-      headers:
-        Authorization:
-          $env: SENTRY_TOKEN # export SENTRY_TOKEN="Bearer <your-sentry-token>"
-  ```
-
-  The `MockApiBackend` is no longer configured by the `NODE_ENV` variable.
-  Instead, the mock backend can be used with an api-override:
-
-  `packages/app/src/apis.ts`:
-
-  ```ts
-  import { createApiFactory } from '@backstage/core';
-  import { MockSentryApi, sentryApiRef } from '@backstage/plugin-sentry';
-
-  export const apis = [
-    // ...
-
-    createApiFactory(sentryApiRef, new MockSentryApi()),
-  ];
-  ```
-
-  If you already use the Sentry backend, you must remove it from the backend:
-
-  Delete `packages/backend/src/plugins/sentry.ts`.
-
-  ```diff
-  # packages/backend/package.json
-
-  ...
-      "@backstage/plugin-scaffolder-backend": "^0.3.2",
-  -   "@backstage/plugin-sentry-backend": "^0.1.3",
-      "@backstage/plugin-techdocs-backend": "^0.3.0",
-  ...
-  ```
-
-  ```diff
-  // packages/backend/src/index.html
-
-    const apiRouter = Router();
-    apiRouter.use('/catalog', await catalog(catalogEnv));
-    apiRouter.use('/rollbar', await rollbar(rollbarEnv));
-    apiRouter.use('/scaffolder', await scaffolder(scaffolderEnv));
-  - apiRouter.use('/sentry', await sentry(sentryEnv));
-    apiRouter.use('/auth', await auth(authEnv));
-    apiRouter.use('/techdocs', await techdocs(techdocsEnv));
-    apiRouter.use('/kubernetes', await kubernetes(kubernetesEnv));
-    apiRouter.use('/proxy', await proxy(proxyEnv));
-    apiRouter.use('/graphql', await graphql(graphqlEnv));
-    apiRouter.use(notFoundHandler());
-  ```
-
-### Patch Changes
-
-- Updated dependencies [38e24db00]
-- Updated dependencies [12bbd748c]
-  - @backstage/backend-common@0.4.0
-
-## 0.1.3
-
-### Patch Changes
-
-- Updated dependencies [1722cb53c]
-- Updated dependencies [1722cb53c]
-- Updated dependencies [7b37e6834]
-- Updated dependencies [8e2effb53]
-  - @backstage/backend-common@0.3.0
-
-## 0.1.2
-
-### Patch Changes
-
-- Updated dependencies [5249594c5]
-- Updated dependencies [56e4eb589]
-- Updated dependencies [e37c0a005]
-- Updated dependencies [f00ca3cb8]
-- Updated dependencies [6579769df]
-- Updated dependencies [8c2b76e45]
-- Updated dependencies [440a17b39]
-- Updated dependencies [8afce088a]
-- Updated dependencies [7bbeb049f]
-  - @backstage/backend-common@0.2.0
diff --git a/plugins/sentry-backend/README.md b/plugins/sentry-backend/README.md
deleted file mode 100644
index 7a559276be..0000000000
--- a/plugins/sentry-backend/README.md
+++ /dev/null
@@ -1,5 +0,0 @@
-# sentry-backend
-
-> DEPRECATED
-
-Please use the [proxy-backend](../proxy-backend) instead. See [CHANGELOG.md](./CHANGELOG.md).
diff --git a/plugins/sentry-backend/package.json b/plugins/sentry-backend/package.json
deleted file mode 100644
index b3a10b4481..0000000000
--- a/plugins/sentry-backend/package.json
+++ /dev/null
@@ -1,42 +0,0 @@
-{
-  "name": "@backstage/plugin-sentry-backend",
-  "version": "0.2.0",
-  "main": "src/index.ts",
-  "types": "src/index.ts",
-  "license": "Apache-2.0",
-  "private": false,
-  "publishConfig": {
-    "access": "public",
-    "main": "dist/index.cjs.js",
-    "types": "dist/index.d.ts"
-  },
-  "scripts": {
-    "start": "backstage-cli backend:dev",
-    "build": "backstage-cli backend:build",
-    "lint": "backstage-cli lint",
-    "test": "backstage-cli test --passWithNoTests",
-    "prepack": "backstage-cli prepack",
-    "postpack": "backstage-cli postpack",
-    "clean": "backstage-cli clean"
-  },
-  "dependencies": {
-    "@backstage/backend-common": "^0.4.0",
-    "@types/express": "^4.17.6",
-    "axios": "^0.20.0",
-    "compression": "^1.7.4",
-    "cors": "^2.8.5",
-    "express": "^4.17.1",
-    "express-promise-router": "^3.0.3",
-    "fs-extra": "^9.0.0",
-    "helmet": "^4.0.0",
-    "morgan": "^1.10.0",
-    "winston": "^3.2.1",
-    "yn": "^4.0.0"
-  },
-  "devDependencies": {
-    "@backstage/cli": "^0.4.1"
-  },
-  "files": [
-    "dist"
-  ]
-}
diff --git a/plugins/sentry-backend/src/index.ts b/plugins/sentry-backend/src/index.ts
deleted file mode 100644
index 6e1d12359e..0000000000
--- a/plugins/sentry-backend/src/index.ts
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * Copyright 2020 Spotify AB
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import { Router } from 'express';
-import { Logger } from 'winston';
-
-// eslint-disable-next-line @typescript-eslint/no-unused-vars
-export const createRouter = async (_: Logger): Promise<Router> => Router();
-
-throw new Error(
-  'The sentry-backend has been deprecated and replaced by the proxy-backend. See the ' +
-    'changelog on how to migrate to the proxy backend: https://github.com/backstage/backstage/blob/master/plugins/sentry/CHANGELOG.md.',
-);