diff --git a/_includes/head.html b/_includes/head.html
index 80fa3abf5..5b2121051 100644
--- a/_includes/head.html
+++ b/_includes/head.html
@@ -7,6 +7,13 @@
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <meta name="description" content="{% if page.summary %}{{ page.summary | strip_html | strip_newlines | truncate: 160 }}{% endif %}">
   <meta name="keywords" content="{{page.tags}}{% if page.tags %}, {% endif %} {{page.keywords}}">
+  {% if page.url contains '/lb4/' %}
+  <meta name="docsearch:version" content="lb4" />
+  {% elsif page.url contains '/lb3/' %}
+  <meta name="docsearch:version" content="lb3" />
+  {% elsif page.url contains '/lb2/' %}
+  <meta name="docsearch:version" content="lb2" />
+  {% endif %}
   <title>{{ page.title }} | {{ site.site_title }}</title>
   <link rel="stylesheet" href="{{base}}/css/syntax.css">
 
diff --git a/_layouts/default.html b/_layouts/default.html
index 8b75b9e7f..f48b6699b 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -21,10 +21,11 @@
         });
     </script>
     {% endif %}
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@docsearch/css@3"/>
+    <link rel="preconnect" href="https://JHHAZ68MS2.algolia.net" crossorigin />
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@docsearch/css@4"/>
 
     
-    <script src="https://cdn.jsdelivr.net/npm/@docsearch/js@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/@docsearch/js@4"></script>
 </head>
 <body>
 {% include topnav.html %}
@@ -45,13 +46,22 @@
 <!-- /.container -->
     </div>
     <script type="text/javascript">
+        const path = window.location.pathname;
+        let currentVersion = 'lb4';
+
+        if (path.includes('/lb3/')) {
+            currentVersion = 'lb3';
+        } else if (path.includes('/lb2/')) {
+            currentVersion = 'lb2';
+        }
         docsearch({
           appId: 'JHHAZ68MS2',
           apiKey: 'd5ea594dd98a77b9e4b27fb69776fa9f',
           indexName: 'loopback',
           container: '#algolia-docsearch',
           searchParameters: {
-            facetFilters: ['lang:en']
+            facetFilters: ['language:en'],
+            optionalFilters: [`version:${currentVersion}`]
           }
         });
       
