diff --git a/package-lock.json b/package-lock.json
index 24437db..a5b8b24 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,7 +43,7 @@
         "govuk-prototype-kit": "^13.14.1"
       },
       "peerDependencies": {
-        "govuk-frontend": "^4.0.0 || ^5.0.0"
+        "govuk-frontend": "^5.0.0"
       }
     },
     "node_modules/@11ty/dependency-tree": {
diff --git a/package.json b/package.json
index 334e78a..0cd6597 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "govuk-prototype-kit": "^13.14.1"
   },
   "peerDependencies": {
-    "govuk-frontend": "^4.0.0 || ^5.0.0"
+    "govuk-frontend": "^5.0.0"
   },
   "engines": {
     "node": ">=18"