diff --git a/package.json b/package.json
index a18d1d5c..f1628e72 100644
--- a/package.json
+++ b/package.json
@@ -46,8 +46,8 @@
     "normalize.css": "^8.0.0",
     "prettier": "^1.7.4",
     "prismjs": "^1.15.0",
-    "react": "16.8.2",
-    "react-dom": "16.8.2",
+    "react": "16.8.3",
+    "react-dom": "16.8.3",
     "react-helmet": "^5.2.0",
     "react-live": "1.8.0-0",
     "remarkable": "^1.7.1",
diff --git a/src/site-constants.js b/src/site-constants.js
index 5f217fa0..5144290f 100644
--- a/src/site-constants.js
+++ b/src/site-constants.js
@@ -8,7 +8,7 @@
 // NOTE: We can't just use `location.toString()` because when we are rendering
 // the SSR part in node.js we won't have a proper location.
 const urlRoot = 'https://reactjs.org';
-const version = '16.8.2';
+const version = '16.8.3';
 const babelURL = 'https://unpkg.com/babel-standalone@6.26.0/babel.min.js';
 
 export {urlRoot, version, babelURL};