diff --git a/packages/react-native-web/package.json b/packages/react-native-web/package.json
index 853a936e..63d1c34b 100644
--- a/packages/react-native-web/package.json
+++ b/packages/react-native-web/package.json
@@ -18,13 +18,11 @@
   "dependencies": {
     "array-find-index": "^1.0.2",
     "create-react-class": "^15.7.0",
-    "deep-assign": "^3.0.0",
     "fbjs": "^3.0.0",
     "hyphenate-style-name": "^1.0.4",
     "inline-style-prefixer": "^6.0.0",
     "normalize-css-color": "^1.0.2",
-    "prop-types": "^15.6.0",
-    "react-timer-mixin": "^0.13.4"
+    "prop-types": "^15.6.0"
   },
   "peerDependencies": {
     "react": ">=17.0.1",
diff --git a/yarn.lock b/yarn.lock
index 23b5fc08..fe172695 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3796,12 +3796,6 @@ dedent@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/dedent/-/dedent-0.7.0.tgz"
 
-deep-assign@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/deep-assign/-/deep-assign-3.0.0.tgz"
-  dependencies:
-    is-obj "^1.0.0"
-
 deep-extend@^0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/deep-extend/-/deep-extend-0.6.0.tgz"
@@ -5672,7 +5666,7 @@ is-number@^7.0.0:
   resolved "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz"
   integrity sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==
 
-is-obj@^1.0.0, is-obj@^1.0.1:
+is-obj@^1.0.1:
   version "1.0.1"
   resolved "https://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz"
 
@@ -8499,10 +8493,6 @@ react-test-renderer@^17.0.1:
     react-shallow-renderer "^16.13.1"
     scheduler "^0.20.1"
 
-react-timer-mixin@^0.13.4:
-  version "0.13.4"
-  resolved "https://registry.yarnpkg.com/react-timer-mixin/-/react-timer-mixin-0.13.4.tgz"
-
 react@^17.0.1:
   version "17.0.1"
   resolved "https://registry.yarnpkg.com/react/-/react-17.0.1.tgz#6e0600416bd57574e3f86d92edba3d9008726127"