diff --git a/packages/use-subscription/package.json b/packages/use-subscription/package.json
index 1ed01ae0329fc..3220c1e122cf7 100644
--- a/packages/use-subscription/package.json
+++ b/packages/use-subscription/package.json
@@ -14,6 +14,9 @@
     "index.js",
     "cjs/"
   ],
+  "dependencies": {
+    "object-assign": "^4.1.1"
+  },
   "peerDependencies": {
     "react": "^16.8.0"
   },