diff --git a/packages/backend/src/index.ts b/packages/backend/src/index.ts
index d22d8c2be4..3033bc095e 100644
--- a/packages/backend/src/index.ts
+++ b/packages/backend/src/index.ts
@@ -39,13 +39,14 @@ import { PluginEnvironment } from './types';
 
 const DEFAULT_PORT = 7000;
 const PORT = parseInt(process.env.PORT ?? '', 10) || DEFAULT_PORT;
-const pluginEnvironment: PluginEnvironment = {
-  logger: getRootLogger().child({ type: 'plugin' }),
-};
 
 async function main() {
   const database = await buildDatabase(getRootLogger());
-  console.log(await database.select().from('locations'));
+
+  const pluginEnvironment: PluginEnvironment = {
+    logger: getRootLogger().child({ type: 'plugin' }),
+    database,
+  };
 
   const app = express();
 
diff --git a/packages/backend/src/plugins/inventory.ts b/packages/backend/src/plugins/inventory.ts
index d48a62b5fe..bf382df2ce 100644
--- a/packages/backend/src/plugins/inventory.ts
+++ b/packages/backend/src/plugins/inventory.ts
@@ -15,22 +15,12 @@
  */
 
 import {
-  AggregatorInventory,
+  DatabaseInventory,
   createRouter,
-  StaticInventory,
 } from '@backstage/plugin-inventory-backend';
-import type { PluginEnvironment } from '../types';
-
-export default async function ({ logger }: PluginEnvironment) {
-  const inventory = new AggregatorInventory();
-  inventory.enlist(
-    new StaticInventory([
-      { id: 'component1' },
-      { id: 'component2' },
-      { id: 'component3' },
-      { id: 'component4' },
-    ]),
-  );
+import { PluginEnvironment } from '../types';
 
+export default async function({ logger, database }: PluginEnvironment) {
+  const inventory = new DatabaseInventory(database);
   return await createRouter({ inventory, logger });
 }
diff --git a/packages/backend/src/types.ts b/packages/backend/src/types.ts
index 196337aec7..ce681a6bdd 100644
--- a/packages/backend/src/types.ts
+++ b/packages/backend/src/types.ts
@@ -14,8 +14,10 @@
  * limitations under the License.
  */
 
-import type { Logger } from 'winston';
+import Knex from 'knex';
+import { Logger } from 'winston';
 
 export type PluginEnvironment = {
   logger: Logger;
+  database: Knex;
 };
diff --git a/plugins/inventory-backend/package.json b/plugins/inventory-backend/package.json
index 9a72daed5e..abebfe11e1 100644
--- a/plugins/inventory-backend/package.json
+++ b/plugins/inventory-backend/package.json
@@ -18,11 +18,16 @@
     "express": "^4.17.1",
     "express-promise-router": "^3.0.3",
     "helmet": "^3.22.0",
+    "knex": "^0.21.1",
     "morgan": "^1.10.0",
-    "winston": "^3.2.1"
+    "uuid": "^8.0.0",
+    "winston": "^3.2.1",
+    "yup": "^0.28.5"
   },
   "devDependencies": {
     "@backstage/cli": "^0.1.1-alpha.4",
+    "@types/uuid": "^7.0.3",
+    "@types/yup": "^0.28.2",
     "jest-fetch-mock": "^3.0.3",
     "tsc-watch": "^4.2.3"
   },
diff --git a/plugins/inventory-backend/src/inventory/AggregatorInventory.ts b/plugins/inventory-backend/src/inventory/AggregatorInventory.ts
deleted file mode 100644
index b768b8eb23..0000000000
--- a/plugins/inventory-backend/src/inventory/AggregatorInventory.ts
+++ /dev/null
@@ -1,45 +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 { NotFoundError } from '@backstage/backend-common';
-import { Component, Inventory } from './types';
-
-export class AggregatorInventory implements Inventory {
-  inventories: Inventory[] = [];
-
-  async list(): Promise<Component[]> {
-    const lists = await Promise.all(this.inventories.map((i) => i.list()));
-    return lists.flat();
-  }
-
-  item(id: string): Promise<Component> {
-    return new Promise((resolve, reject) => {
-      const promises = this.inventories.map((i) =>
-        i.item(id).then(resolve, () => {
-          // For now, just swallow errors in individual inventories;
-          // should handle partial errors better
-        }),
-      );
-      Promise.all(promises).then(() =>
-        reject(new NotFoundError(`Found no component with ID ${id}`)),
-      );
-    });
-  }
-
-  enlist(inventory: Inventory) {
-    this.inventories.push(inventory);
-  }
-}
diff --git a/plugins/inventory-backend/src/inventory/DatabaseInventory.ts b/plugins/inventory-backend/src/inventory/DatabaseInventory.ts
new file mode 100644
index 0000000000..0afa1a6bcf
--- /dev/null
+++ b/plugins/inventory-backend/src/inventory/DatabaseInventory.ts
@@ -0,0 +1,64 @@
+/*
+ * 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 { NotFoundError } from '@backstage/backend-common';
+import Knex from 'knex';
+import { v4 as uuidv4 } from 'uuid';
+import { AddLocationRequest, Component, Inventory, Location } from './types';
+
+export class DatabaseInventory implements Inventory {
+  constructor(private readonly database: Knex) {}
+
+  async components(): Promise<Component[]> {
+    throw new Error('Not supported');
+  }
+
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  async component(id: string): Promise<Component> {
+    throw new Error('Not supported');
+  }
+
+  async addLocation(location: AddLocationRequest): Promise<Location> {
+    const id = uuidv4();
+    const { type, target } = location;
+    await this.database('locations').insert({ id, type, target });
+    return await this.location(id);
+  }
+
+  async removeLocation(id: string): Promise<void> {
+    const result = await this.database('locations')
+      .where({ id })
+      .del();
+
+    if (!result) {
+      throw new NotFoundError(`Found no location with ID ${id}`);
+    }
+  }
+
+  async location(id: string): Promise<Location> {
+    const items = await this.database('locations')
+      .where({ id })
+      .select();
+    if (!items.length) {
+      throw new NotFoundError(`Found no location with ID ${id}`);
+    }
+    return items[0];
+  }
+
+  async locations(): Promise<Location[]> {
+    return await this.database('locations').select();
+  }
+}
diff --git a/plugins/inventory-backend/src/inventory/StaticInventory.ts b/plugins/inventory-backend/src/inventory/StaticInventory.ts
index 4569ae8ed2..3ce6dfcd76 100644
--- a/plugins/inventory-backend/src/inventory/StaticInventory.ts
+++ b/plugins/inventory-backend/src/inventory/StaticInventory.ts
@@ -15,20 +15,49 @@
  */
 
 import { NotFoundError } from '@backstage/backend-common';
-import { Component, Inventory } from './types';
+import { v4 as uuidv4 } from 'uuid';
+import { AddLocationRequest, Component, Inventory, Location } from './types';
 
 export class StaticInventory implements Inventory {
-  constructor(private components: Component[]) {}
+  private _components: Component[];
+  private _locations: Location[];
 
-  async list(): Promise<Component[]> {
-    return this.components.slice();
+  constructor(components: Component[], locations: Location[]) {
+    this._components = components;
+    this._locations = locations;
   }
 
-  async item(id: string): Promise<Component> {
-    const item = this.components.find((i) => i.id === id);
+  async components(): Promise<Component[]> {
+    return this._components.slice();
+  }
+
+  async component(id: string): Promise<Component> {
+    const item = this._components.find(i => i.id === id);
     if (!item) {
       throw new NotFoundError(`Found no component with ID ${id}`);
     }
     return item;
   }
+
+  async addLocation(location: AddLocationRequest): Promise<Location> {
+    const l = { id: uuidv4(), type: location.type, target: location.target };
+    this._locations.push(l);
+    return l;
+  }
+
+  async removeLocation(id: string): Promise<void> {
+    this._locations = this._locations.filter(l => l.id !== id);
+  }
+
+  async location(id: string): Promise<Location> {
+    const location = this._locations.find(l => l.id === id);
+    if (!location) {
+      throw new NotFoundError(`Found no location with ID ${id}`);
+    }
+    return location;
+  }
+
+  async locations(): Promise<Location[]> {
+    return this._locations;
+  }
 }
diff --git a/plugins/inventory-backend/src/inventory/index.ts b/plugins/inventory-backend/src/inventory/index.ts
index 3affa1109a..e61ff20e19 100644
--- a/plugins/inventory-backend/src/inventory/index.ts
+++ b/plugins/inventory-backend/src/inventory/index.ts
@@ -14,6 +14,6 @@
  * limitations under the License.
  */
 
-export * from './AggregatorInventory';
+export * from './DatabaseInventory';
 export * from './StaticInventory';
 export * from './types';
diff --git a/plugins/inventory-backend/src/inventory/types.ts b/plugins/inventory-backend/src/inventory/types.ts
index 863dccb291..6d6ef38df1 100644
--- a/plugins/inventory-backend/src/inventory/types.ts
+++ b/plugins/inventory-backend/src/inventory/types.ts
@@ -14,11 +14,35 @@
  * limitations under the License.
  */
 
+import * as yup from 'yup';
+
 export type Component = {
   id: string;
 };
 
-export type Inventory = {
-  list(): Promise<Component[]>;
-  item(id: string): Promise<Component>;
+export type Location = {
+  id: string;
+  type: string;
+  target: string;
+};
+
+export type AddLocationRequest = {
+  type: string;
+  target: string;
+};
+
+export const addLocationRequestShape: yup.Schema<AddLocationRequest> = yup
+  .object({
+    type: yup.string().required(),
+    target: yup.string().required(),
+  })
+  .noUnknown();
+
+export type Inventory = {
+  components(): Promise<Component[]>;
+  component(id: string): Promise<Component>;
+  addLocation(location: AddLocationRequest): Promise<Location>;
+  removeLocation(id: string): Promise<void>;
+  location(id: string): Promise<Location>;
+  locations(): Promise<Location[]>;
 };
diff --git a/plugins/inventory-backend/src/service/router.ts b/plugins/inventory-backend/src/service/router.ts
index a05fac08be..06077d29c4 100644
--- a/plugins/inventory-backend/src/service/router.ts
+++ b/plugins/inventory-backend/src/service/router.ts
@@ -14,34 +14,84 @@
  * limitations under the License.
  */
 
-import express from 'express';
-import { Logger } from 'winston';
+import { InputError } from '@backstage/backend-common';
+import express, { Request } from 'express';
 import Router from 'express-promise-router';
-import { Inventory } from '../inventory';
+import { Logger } from 'winston';
+import yup from 'yup';
+import { addLocationRequestShape, Inventory } from '../inventory';
 
 export interface RouterOptions {
   inventory: Inventory;
   logger: Logger;
 }
 
+async function validateRequestBody<T>(
+  req: Request,
+  schema: yup.Schema<T>,
+): Promise<T> {
+  const contentType = req.header('content-type');
+  if (!contentType) {
+    throw new InputError('Content-Type missing');
+  } else if (!contentType.match(/^application\/json($|;)/)) {
+    throw new InputError('Illegal Content-Type');
+  }
+
+  const body = req.body;
+  if (!body) {
+    throw new InputError('Missing request body');
+  }
+
+  try {
+    await schema.validate(body, { strict: true });
+  } catch (e) {
+    throw new InputError(`Malformed request: ${e}`);
+  }
+
+  return body as T;
+}
+
 export async function createRouter(
   options: RouterOptions,
 ): Promise<express.Router> {
   const inventory = options.inventory;
   const logger = options.logger.child({ plugin: 'inventory' });
-
   const router = Router();
+
+  // Components
   router
-    .get('/', async (req, res) => {
-      const components = await inventory.list();
+    .get('/components', async (req, res) => {
+      const components = await inventory.components();
       res.status(200).send(components);
     })
-    .get('/:id', async (req, res) => {
+    .get('/components/:id', async (req, res) => {
       const { id } = req.params;
-      const component = await inventory.item(id);
+      const component = await inventory.component(id);
       res.status(200).send(component);
     });
 
+  // Locations
+  router
+    .post('/locations', async (req, res) => {
+      const input = await validateRequestBody(req, addLocationRequestShape);
+      const output = await inventory.addLocation(input);
+      res.status(201).send(output);
+    })
+    .get('/locations', async (req, res) => {
+      const output = await inventory.locations();
+      res.status(200).send(output);
+    })
+    .get('/locations/:id', async (req, res) => {
+      const { id } = req.params;
+      const output = await inventory.location(id);
+      res.status(200).send(output);
+    })
+    .delete('/locations/:id', async (req, res) => {
+      const { id } = req.params;
+      await inventory.removeLocation(id);
+      res.status(200).send();
+    });
+
   const app = express();
   app.set('logger', logger);
   app.use('/', router);
diff --git a/plugins/inventory-backend/src/service/standaloneServer.ts b/plugins/inventory-backend/src/service/standaloneServer.ts
index be339c5ecc..76d57ff852 100644
--- a/plugins/inventory-backend/src/service/standaloneServer.ts
+++ b/plugins/inventory-backend/src/service/standaloneServer.ts
@@ -16,7 +16,7 @@
 
 import { Server } from 'http';
 import { Logger } from 'winston';
-import { AggregatorInventory, StaticInventory } from '../inventory';
+import { StaticInventory } from '../inventory';
 import { createStandaloneApplication } from './standaloneApplication';
 
 export interface ServerOptions {
@@ -30,14 +30,14 @@ export async function startStandaloneServer(
 ): Promise<Server> {
   const logger = options.logger.child({ service: 'inventory-backend' });
 
-  const inventory = new AggregatorInventory();
-  inventory.enlist(
-    new StaticInventory([
+  const inventory = new StaticInventory(
+    [
       { id: 'component1' },
       { id: 'component2' },
       { id: 'component3' },
       { id: 'component4' },
-    ]),
+    ],
+    [],
   );
 
   logger.debug('Creating application...');
diff --git a/plugins/inventory-backend/tsconfig.json b/plugins/inventory-backend/tsconfig.json
index dd13cfe1bc..015a967f76 100644
--- a/plugins/inventory-backend/tsconfig.json
+++ b/plugins/inventory-backend/tsconfig.json
@@ -6,7 +6,7 @@
     "sourceMap": true,
     "declaration": true,
     "strict": true,
-    "target": "es5",
+    "target": "es2019",
     "module": "commonjs",
     "esModuleInterop": true,
     "lib": ["es2019"],
diff --git a/yarn.lock b/yarn.lock
index 4ffa6ed014..6b716af0dd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -956,6 +956,13 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
+"@babel/runtime@^7.9.6":
+  version "7.9.6"
+  resolved "https://registry.npmjs.org/@babel/runtime/-/runtime-7.9.6.tgz#a9102eb5cadedf3f31d08a9ecf294af7827ea29f"
+  integrity sha512-64AF1xY3OAkFHqOb9s4jpgk1Mm5vDZ4L3acHvAml+53nO1XbXLuDodsVpO4OIUsmemlUHMxNdYMNJmsvOwLrvQ==
+  dependencies:
+    regenerator-runtime "^0.13.4"
+
 "@babel/template@^7.4.0", "@babel/template@^7.7.4", "@babel/template@^7.8.3", "@babel/template@^7.8.6":
   version "7.8.6"
   resolved "https://registry.npmjs.org/@babel/template/-/template-7.8.6.tgz#86b22af15f828dfb086474f964dcc3e39c43ce2b"
@@ -4542,6 +4549,11 @@
   dependencies:
     source-map "^0.6.1"
 
+"@types/uuid@^7.0.3":
+  version "7.0.3"
+  resolved "https://registry.npmjs.org/@types/uuid/-/uuid-7.0.3.tgz#45cd03e98e758f8581c79c535afbd4fc27ba7ac8"
+  integrity sha512-PUdqTZVrNYTNcIhLHkiaYzoOIaUi5LFg/XLerAdgvwQrUCx+oSbtoBze1AMyvYbcwzUSNC+Isl58SM4Sm/6COw==
+
 "@types/webpack-dev-server@*", "@types/webpack-dev-server@^3.10.0":
   version "3.10.1"
   resolved "https://registry.npmjs.org/@types/webpack-dev-server/-/webpack-dev-server-3.10.1.tgz#93b7133cc9dab1ca1b76659f5ef8b763ad54c28a"
@@ -4598,6 +4610,11 @@
   dependencies:
     "@types/yargs-parser" "*"
 
+"@types/yup@^0.28.2":
+  version "0.28.2"
+  resolved "https://registry.npmjs.org/@types/yup/-/yup-0.28.2.tgz#ea6597d7bd48ecea94b81f8de7fd60fba07a4628"
+  integrity sha512-VvXPMsvUnkDIWHFIalJROljLSv9m9TaXKng5sLFUkmuybgY64AeBbZ5tOPZ9sjSpqhJFeOXIc22JSQDO6SCONg==
+
 "@types/zen-observable@^0.8.0":
   version "0.8.0"
   resolved "https://registry.npmjs.org/@types/zen-observable/-/zen-observable-0.8.0.tgz#8b63ab7f1aa5321248aad5ac890a485656dcea4d"
@@ -9912,6 +9929,11 @@ flush-write-stream@^1.0.0:
     inherits "^2.0.3"
     readable-stream "^2.3.6"
 
+fn-name@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmjs.org/fn-name/-/fn-name-3.0.0.tgz#0596707f635929634d791f452309ab41558e3c5c"
+  integrity sha512-eNMNr5exLoavuAMhIUVsOKF79SWd/zG104ef6sxBTSw+cZc6BXdQXDvYcGvp0VbxVVSp1XDUNoz7mg1xMtSznA==
+
 focus-lock@^0.6.6:
   version "0.6.6"
   resolved "https://registry.npmjs.org/focus-lock/-/focus-lock-0.6.6.tgz#98119a755a38cfdbeda0280eaa77e307eee850c7"
@@ -13920,6 +13942,11 @@ lockfile@^1.0.4:
   dependencies:
     signal-exit "^3.0.2"
 
+lodash-es@^4.17.11:
+  version "4.17.15"
+  resolved "https://registry.npmjs.org/lodash-es/-/lodash-es-4.17.15.tgz#21bd96839354412f23d7a10340e5eac6ee455d78"
+  integrity sha512-rlrc3yU3+JNOpZ9zj5pQtxnx2THmvRykwL4Xlxoa8I9lHBlVbbyPhgyPMioxVZ4NqyxaVVtaJnzsyOidQIhyyQ==
+
 lodash._baseuniq@~4.6.0:
   version "4.6.0"
   resolved "https://registry.npmjs.org/lodash._baseuniq/-/lodash._baseuniq-4.6.0.tgz#0ebb44e456814af7905c6212fa2c9b2d51b841e8"
@@ -17300,6 +17327,11 @@ prop-types@^15.5.10, prop-types@^15.5.4, prop-types@^15.5.8, prop-types@^15.6.0,
     object-assign "^4.1.1"
     react-is "^16.8.1"
 
+property-expr@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.npmjs.org/property-expr/-/property-expr-2.0.2.tgz#fff2a43919135553a3bc2fdd94bdb841965b2330"
+  integrity sha512-bc/5ggaYZxNkFKj374aLbEDqVADdYaLcFo8XBkishUWbaAdjlphaBFns9TvRA2pUseVL/wMFmui9X3IdNDU37g==
+
 property-information@^5.0.0:
   version "5.4.0"
   resolved "https://registry.npmjs.org/property-information/-/property-information-5.4.0.tgz#16e08f13f4e5c4a7be2e4ec431c01c4f8dba869a"
@@ -20210,6 +20242,11 @@ symbol.prototype.description@^1.0.0:
     es-abstract "^1.17.0-next.1"
     has-symbols "^1.0.1"
 
+synchronous-promise@^2.0.10:
+  version "2.0.11"
+  resolved "https://registry.npmjs.org/synchronous-promise/-/synchronous-promise-2.0.11.tgz#e92022b0754e916f556d3ace1626d24a24214b7e"
+  integrity sha512-8/L5FOCjnlK0FoAfj+NqdCaImMKvEyOEzGmdfcezKp5K9HIukm4akx72endvM87eS/gU8kOxiMQflpC/CdkQAg==
+
 table@^5.2.3:
   version "5.4.6"
   resolved "https://registry.npmjs.org/table/-/table-5.4.6.tgz#1292d19500ce3f86053b05f0e8e7e4a3bb21079e"
@@ -20604,6 +20641,11 @@ toposort@^1.0.0:
   resolved "https://registry.npmjs.org/toposort/-/toposort-1.0.7.tgz#2e68442d9f64ec720b8cc89e6443ac6caa950029"
   integrity sha1-LmhELZ9k7HILjMieZEOsbKqVACk=
 
+toposort@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.npmjs.org/toposort/-/toposort-2.0.2.tgz#ae21768175d1559d48bef35420b2f4962f09c330"
+  integrity sha1-riF2gXXRVZ1IvvNUILL0li8JwzA=
+
 touch@^3.1.0:
   version "3.1.0"
   resolved "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz#fe365f5f75ec9ed4e56825e0bb76d24ab74af83b"
@@ -21244,6 +21286,11 @@ uuid@^7.0.3:
   resolved "https://registry.npmjs.org/uuid/-/uuid-7.0.3.tgz#c5c9f2c8cf25dc0a372c4df1441c41f5bd0c680b"
   integrity sha512-DPSke0pXhTZgoF/d+WSt2QaKMCFSfx7QegxEWT+JOuHF5aWrKEn0G+ztjuJg/gG8/ItK+rbPCD/yNv8yyih6Cg==
 
+uuid@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.npmjs.org/uuid/-/uuid-8.0.0.tgz#bc6ccf91b5ff0ac07bbcdbf1c7c4e150db4dbb6c"
+  integrity sha512-jOXGuXZAWdsTH7eZLtyXMqUb9EcWMGZNbL9YcGBJl4MH4nrxHmZJhEHvyLFrkxo+28uLb/NYRcStH48fnD0Vzw==
+
 v8-compile-cache@^2.0.3:
   version "2.1.0"
   resolved "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz#e14de37b31a6d194f5690d67efc4e7f6fc6ab30e"
@@ -22223,6 +22270,19 @@ yn@3.1.1:
   resolved "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz#1e87401a09d767c1d5eab26a6e4c185182d2eb50"
   integrity sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==
 
+yup@^0.28.5:
+  version "0.28.5"
+  resolved "https://registry.npmjs.org/yup/-/yup-0.28.5.tgz#85cabb4000d3623ef69be81551190692e631a8a5"
+  integrity sha512-7JZcvpUGUxMKoaEtcoMEM8lCWRaueGNH/A3EhL/UWqfbFm3uloiI+x59Yq4nzhbbYWUTwAsCteaZOJ+VbqI1uw==
+  dependencies:
+    "@babel/runtime" "^7.9.6"
+    fn-name "~3.0.0"
+    lodash "^4.17.15"
+    lodash-es "^4.17.11"
+    property-expr "^2.0.2"
+    synchronous-promise "^2.0.10"
+    toposort "^2.0.2"
+
 zen-observable@^0.8.15:
   version "0.8.15"
   resolved "https://registry.npmjs.org/zen-observable/-/zen-observable-0.8.15.tgz#96415c512d8e3ffd920afd3889604e30b9eaac15"