diff --git a/_docs/gen.go b/_docs/gen.go
index 464b3d6a4..2b007d2c5 100644
--- a/_docs/gen.go
+++ b/_docs/gen.go
@@ -144,6 +144,7 @@ var (
 	graphicsExamples = []example{
 		{Name: "airship", ThumbWidth: 320, ThumbHeight: 240},
 		{Name: "alphablending", ThumbWidth: 320, ThumbHeight: 240},
+		{Name: "drag", ThumbWidth: 320, ThumbHeight: 240},
 		{Name: "filter", ThumbWidth: 320, ThumbHeight: 240},
 		{Name: "flood", ThumbWidth: 320, ThumbHeight: 240},
 		{Name: "font", ThumbWidth: 320, ThumbHeight: 240},
diff --git a/docs/index.html b/docs/index.html
index be3ba168f..f09ab06cd 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -35,7 +35,7 @@
 </div></header>
 
 <main><div class="container">
-  <p>Stable version: v1.6.3 / Development version: v1.7.0-alpha</p>
+  <p>Stable version: v1.6.4 / Development version: v1.7.0-alpha</p>
 
   <h2 id="platforms">Platforms</h2>
   <dl class="row">
@@ -75,6 +75,8 @@
       <a href="./examples/airship.html"><img src="images/examples/airship.png" width="320" height="240" alt="Ebiten example: airship" class="img-thumbnail"></a>
     </div><div class="col-3">
       <a href="./examples/alphablending.html"><img src="images/examples/alphablending.png" width="320" height="240" alt="Ebiten example: alphablending" class="img-thumbnail"></a>
+    </div><div class="col-3">
+      <a href="./examples/drag.html"><img src="images/examples/drag.png" width="320" height="240" alt="Ebiten example: drag" class="img-thumbnail"></a>
     </div><div class="col-3">
       <a href="./examples/filter.html"><img src="images/examples/filter.png" width="320" height="240" alt="Ebiten example: filter" class="img-thumbnail"></a>
     </div><div class="col-3">