Override DRF's builtin Bootstrap with NetBox's own more recent copy

netbox/templates/rest_framework/api.html

@@ -1,4 +1,10 @@
 {% extends 'rest_framework/base.html' %}
+{% load static %}
+
+{% block bootstrap_theme %}
+    <link rel="stylesheet" type="text/css" href="{% static 'bootstrap-3.4.1-dist/css/bootstrap.min.css' %}"/>
+    <link rel="stylesheet" type="text/css" href="{% static "rest_framework/css/bootstrap-tweaks.css" %}"/>
+{% endblock %}
 
 {% block branding %}
     <a class="navbar-brand" href="/{{ settings.BASE_PATH }}">NetBox</a>