diff --git a/package.json b/package.json
index fabff510a..be991f89a 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "dependencies": {
     "@babel/core": "7.4.0",
     "@babel/preset-env": "7.4.2",
-    "diff-dom": "2.3.1",
+    "diff-dom": "2.5.1",
     "govuk-elements-sass": "3.1.2",
     "govuk_frontend_toolkit": "8.1.0",
     "govuk_template_jinja": "0.24.1",