diff --git a/source/components/index.html b/source/components/index.html
index 9c13cafbb91..3b458b40632 100644
--- a/source/components/index.html
+++ b/source/components/index.html
@@ -48,8 +48,9 @@ Support for these components is provided by the Home Assistant community.
         {%- for group in components_by_version -%}
           <optgroup label="{{ group.label }} ({{group.new_components_count}})">
             {%- for version in group.versions -%}
-              <option value="#version/{{ version.label }}">{{ version.label }} ({{ version.new_components_count }})
+              <option value="#version/{{ version.label }}">{{ version.label }} ({{ version.new_components_count }})</option>
             {%- endfor -%}
+          </optgroup>
         {%- endfor -%}
       </select>
 {%- for category in categories -%}