diff --git a/docs/index.html b/docs/index.html
index b682914a..0d1ceba4 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -83,7 +83,7 @@
     Please wait...
   </div>
 
-  <script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.3.0/build/ol.js"></script>
+  <script src="//cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.15.1/build/ol.js"></script>
   <script src="//unpkg.com/babel-standalone@6.26.0/babel.min.js"></script>
   <script src="//unpkg.com/vue@2/dist/vue.min.js"></script>
   <script src="//unpkg.com/vuep@latest/dist/vuep.min.js"></script>
diff --git a/tests/umd.html b/tests/umd.html
index 32093e4b..d6d5950e 100644
--- a/tests/umd.html
+++ b/tests/umd.html
@@ -65,7 +65,7 @@
   </div>
 
   <script src="https://unpkg.com/vue@latest/dist/vue.min.js"></script>
-  <script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.4.3/build/ol.js"></script>
+  <script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.15.1/build/ol.js"></script>
   <script src="../dist/vuelayers.umd.js"></script>
   <script>
     console.log(ol)