diff --git a/package.json b/package.json
index 84bccfe3f..7fc09e320 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,6 @@
     "matrix-js-sdk": "github:matrix-org/matrix-js-sdk#develop",
     "matrix-react-sdk": "github:matrix-org/matrix-react-sdk#develop",
     "matrix-widget-api": "^1.1.1",
-    "prop-types": "^15.7.2",
     "react": "17.0.2",
     "react-dom": "17.0.2",
     "sanitize-html": "^2.3.2",
diff --git a/webpack.config.js b/webpack.config.js
index 7db8d3b62..9ecb2ad5b 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -196,8 +196,7 @@ module.exports = (env, argv) => {
                 // Same goes for js/react-sdk - we don't need two copies.
                 "matrix-js-sdk": path.resolve(__dirname, 'node_modules/matrix-js-sdk'),
                 "matrix-react-sdk": path.resolve(__dirname, 'node_modules/matrix-react-sdk'),
-                // and prop-types and sanitize-html
-                "prop-types": path.resolve(__dirname, 'node_modules/prop-types'),
+                // and sanitize-html
                 "sanitize-html": path.resolve(__dirname, 'node_modules/sanitize-html'),
 
                 // Define a variable so the i18n stuff can load