diff --git a/adminsortable/templates/adminsortable/edit_inline/tabular.html b/adminsortable/templates/adminsortable/edit_inline/tabular.html
index 7f5cd92..ab0da3a 100644
--- a/adminsortable/templates/adminsortable/edit_inline/tabular.html
+++ b/adminsortable/templates/adminsortable/edit_inline/tabular.html
@@ -11,7 +11,7 @@
      {% for field in inline_admin_formset.fields %}
        {% if not field.widget.is_hidden %}
          <th{% if forloop.first %} colspan="2"{% endif %}{% if field.required %} class="required"{% endif %}>{{ field.label|capfirst }}
-         {% if field.help_text %}&nbsp;<img src="{% static "admin/img/icon-unknown.gif" %}" class="help help-tooltip" width="10" height="10" alt="({{ field.help_text|striptags }})" title="{{ field.help_text|striptags }}" />{% endif %}
+         {% if field.help_text %}&nbsp;<img src="{% if django_version.major >= 1 and django_version.minor >= 9 %}{% static "admin/img/icon-unknown.svg" %}{% else %}{% static "admin/img/icon-unknown.gif" %}{% endif %}" class="help help-tooltip" width="10" height="10" alt="({{ field.help_text|striptags }})" title="{{ field.help_text|striptags }}" />{% endif %}
          </th>
        {% endif %}
      {% endfor %}