diff --git a/.mill-version b/.mill-version
index b799a8c..772c67a 100644
--- a/.mill-version
+++ b/.mill-version
@@ -1 +1 @@
-0.11.5
\ No newline at end of file
+0.11.8
\ No newline at end of file
diff --git a/DEV.md b/DEV.md
index cf5adea..3d79ecb 100644
--- a/DEV.md
+++ b/DEV.md
@@ -17,7 +17,7 @@ scala-cli compile examples\scala-cli
 git diff
 git commit -am "msg"
 
-$VERSION="0.6.0"
+$VERSION="0.7.0"
 git commit --allow-empty -m "Release $VERSION"
 git tag -a $VERSION -m "Release $VERSION"
 git push  --atomic origin main $VERSION
diff --git a/README.md b/README.md
index 4811b06..46bf09c 100644
--- a/README.md
+++ b/README.md
@@ -4,3 +4,7 @@
 Your new favorite, simple, intuitive, batteries-included web framework.
 
 WIP  :construction: but very much usable. :construction_worker:
+
+
+![](https://i.imgur.com/3a8FqWN.png)
+
diff --git a/examples/scala-cli/demo.sc b/examples/scala-cli/demo.sc
new file mode 100644
index 0000000..99a4d0b
--- /dev/null
+++ b/examples/scala-cli/demo.sc
@@ -0,0 +1,37 @@
+//> using scala "3.4.2"
+//> using dep ba.sake::sharaf:0.6.0
+
+import io.undertow.Undertow
+import ba.sake.querson.QueryStringRW
+import ba.sake.tupson.JsonRW
+import ba.sake.validson.Validator
+import ba.sake.sharaf.*, routing.*
+
+case class Car(model: String, quantity: Int) derives JsonRW
+
+case class CarQuery(model: Option[String]) derives QueryStringRW
+
+var carsDB = Seq[Car]()
+
+val routes = Routes:
+  case GET() -> Path("cars") =>
+    val qp = Request.current.queryParamsValidated[CarQuery]
+    val filteredCars = qp.model match
+      case Some(b) => carsDB.filter(_.model == b)
+      case None    => carsDB
+    Response.withBody(filteredCars)
+
+  case POST() -> Path("cars") =>
+    val newCar = Request.current.bodyJsonValidated[Car]
+    carsDB = carsDB.appended(newCar)
+    Response.withBody(newCar)
+
+Undertow.builder
+  .addHttpListener(8181, "localhost")
+  .setHandler(
+    SharafHandler(routes).withExceptionMapper(ExceptionMapper.json)
+  )
+  .build
+  .start()
+
+println(s"Server started at http://localhost:8181")
diff --git a/sharaf/src/ba/sake/sharaf/ResponseWritable.scala b/sharaf/src/ba/sake/sharaf/ResponseWritable.scala
index 7b48167..f192fe6 100644
--- a/sharaf/src/ba/sake/sharaf/ResponseWritable.scala
+++ b/sharaf/src/ba/sake/sharaf/ResponseWritable.scala
@@ -27,8 +27,7 @@ object ResponseWritable {
 
     response.headerUpdates.updates.foreach {
       case HeaderUpdate.Set(name, values) =>
-        exchange.getResponseHeaders.remove(name)
-        exchange.getResponseHeaders.addAll(name, values.asJava)
+        exchange.getResponseHeaders.putAll(name, values.asJava)
       case HeaderUpdate.Remove(name) =>
         exchange.getResponseHeaders.remove(name)
     }