diff --git a/header.php b/header.php
index aafeaa1..dd170c2 100644
--- a/header.php
+++ b/header.php
@@ -70,7 +70,7 @@
                         <a href="https://www.nationalarchives.gov.uk/about/visit-us/whats-on/" class="tna-global-header__navigation-item-link" tabindex="0">What’s on</a>
                     </li>
                     <li class="tna-global-header__navigation-item">
-                        <a href="https://dev-beta.nationalarchives.gov.uk/explore-the-collection/" class="tna-global-header__navigation-item-link" tabindex="0">Explore the collection</a>
+                        <a href="https://beta.nationalarchives.gov.uk/explore-the-collection/" class="tna-global-header__navigation-item-link" tabindex="0">Explore the collection</a>
                     </li>
                     <li class="tna-global-header__navigation-item">
                         <a href="https://www.nationalarchives.gov.uk/help-with-your-research/" class="tna-global-header__navigation-item-link" tabindex="0">Help using the archive</a>