diff --git a/plugins/ring/package-lock.json b/plugins/ring/package-lock.json
index 6e9d3f261..7043c923b 100644
--- a/plugins/ring/package-lock.json
+++ b/plugins/ring/package-lock.json
@@ -13,6 +13,7 @@
             "axios": "^0.24.0"
          },
          "devDependencies": {
+            "@scrypted/common": "file:../../common",
             "@scrypted/sdk": "file:../../sdk"
          },
          "optionalDependencies": {
@@ -22,11 +23,12 @@
       "../../common": {
          "name": "@scrypted/common",
          "version": "1.0.1",
-         "extraneous": true,
+         "dev": true,
          "license": "ISC",
          "dependencies": {
             "@koush/werift": "file:../external/werift/packages/webrtc",
             "@scrypted/sdk": "file:../sdk",
+            "node-fetch-commonjs": "^3.1.1",
             "typescript": "^4.4.3"
          },
          "devDependencies": {
@@ -475,6 +477,10 @@
             "tsyringe": "^4.6.0"
          }
       },
+      "node_modules/@scrypted/common": {
+         "resolved": "../../common",
+         "link": true
+      },
       "node_modules/@scrypted/sdk": {
          "resolved": "../../sdk",
          "link": true
@@ -2684,6 +2690,16 @@
             "tsyringe": "^4.6.0"
          }
       },
+      "@scrypted/common": {
+         "version": "file:../../common",
+         "requires": {
+            "@koush/werift": "file:../external/werift/packages/webrtc",
+            "@scrypted/sdk": "file:../sdk",
+            "@types/node": "^16.9.0",
+            "node-fetch-commonjs": "^3.1.1",
+            "typescript": "^4.4.3"
+         }
+      },
       "@scrypted/sdk": {
          "version": "file:../../sdk",
          "requires": {
diff --git a/plugins/ring/package.json b/plugins/ring/package.json
index 5cfd28772..e06a311f0 100644
--- a/plugins/ring/package.json
+++ b/plugins/ring/package.json
@@ -33,6 +33,7 @@
       "got": "11.8.2"
    },
    "devDependencies": {
+      "@scrypted/common": "file:../../common",
       "@scrypted/sdk": "file:../../sdk"
    },
    "version": "0.0.59"
diff --git a/plugins/ring/src/main.ts b/plugins/ring/src/main.ts
index 3c69653cd..11f63603e 100644
--- a/plugins/ring/src/main.ts
+++ b/plugins/ring/src/main.ts
@@ -8,7 +8,7 @@ import { startRTCSignalingSession } from '../../../common/src/rtc-signaling';
 import { generateUuid } from './ring-client-api';
 import fs from 'fs';
 import { clientApi } from './ring-client-api';
-import { RefreshPromise, singletonPromise, timeoutPromise } from './util';
+import { RefreshPromise, singletonPromise, timeoutPromise } from '@scrypted/common/src/promise-utils';
 import { LiveCallNegotiation } from './ring-client-api';
 import dgram from 'dgram';
 
diff --git a/plugins/ring/src/util.ts b/plugins/ring/src/util.ts
deleted file mode 100644
index 533bf93c3..000000000
--- a/plugins/ring/src/util.ts
+++ /dev/null
@@ -1,30 +0,0 @@
-export interface RefreshPromise<T> {
-    promise: Promise<T>;
-    cacheDuration: number;
-}
-
-export function singletonPromise<T>(rp: RefreshPromise<T>, method: () => Promise<T>) {
-    if (rp?.promise)
-        return rp;
-
-    const promise = method();
-    if (!rp) {
-        rp = {
-            promise,
-            cacheDuration: 0,
-        }
-    }
-    else {
-        rp.promise = promise;
-    }
-    promise.finally(() => setTimeout(() => rp.promise = undefined, rp.cacheDuration));
-    return rp;
-}
-
-export function timeoutPromise<T>(timeout: number, promise: Promise<T>): Promise<T> {
-    return new Promise<T>((resolve, reject) => {
-        setTimeout(() => reject(new Error('timed out')), timeout);
-        promise.then(resolve);
-        promise.catch(reject);
-    })
-}