diff --git a/client-multipart/README.md b/client-multipart/README.md
index dec4a12d..54fe4056 100644
--- a/client-multipart/README.md
+++ b/client-multipart/README.md
@@ -1,6 +1,7 @@
 # Client Multipart
 
-A sample project for [Ktor](https://ktor.io) showing how to send [multipart data](https://ktor.io/docs/request.html#upload_file) from the HttpClient.
+A sample project for [Ktor](https://ktor.io) showing how to
+send [multipart data](https://ktor.io/docs/client-requests.html#upload_file) from the HttpClient.
 
 ## Running
 
diff --git a/client-multipart/src/MultipartApp.kt b/client-multipart/src/MultipartApp.kt
index 8394545b..101747db 100644
--- a/client-multipart/src/MultipartApp.kt
+++ b/client-multipart/src/MultipartApp.kt
@@ -5,7 +5,6 @@ import io.ktor.client.request.*
 import io.ktor.client.statement.*
 import io.ktor.http.*
 import io.ktor.http.content.*
-import io.ktor.server.application.*
 import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import io.ktor.server.request.*
@@ -13,7 +12,8 @@ import io.ktor.server.response.*
 import io.ktor.server.routing.*
 import io.ktor.util.*
 import io.ktor.utils.io.*
-import io.ktor.utils.io.core.*
+import io.ktor.utils.io.jvm.javaio.*
+import kotlinx.io.readByteArray
 import java.util.*
 
 fun main() {
@@ -41,11 +41,11 @@ fun main() {
                             "FormItem(${part.name},${part.value})"
                         }
                         is PartData.FileItem -> {
-                            val bytes = part.streamProvider().readBytes()
+                            val bytes = part.provider().toInputStream().readAllBytes()
                             "FileItem(${part.name},${part.originalFileName},${hex(bytes)})"
                         }
                         is PartData.BinaryItem -> {
-                            "BinaryItem(${part.name},${hex(part.provider().readBytes())})"
+                            "BinaryItem(${part.name},${hex(part.provider().readByteArray())})"
                         }
                         else -> "Unknown"
                     }
@@ -59,7 +59,8 @@ fun main() {
 }
 
 class MultiPartContent(val parts: List<Part>) : OutgoingContent.WriteChannelContent() {
-    val uuid = UUID.randomUUID()
+    val uuid: UUID?
+        get() = UUID.randomUUID()
     val boundary = "***ktor-$uuid-ktor-${System.currentTimeMillis()}***"
 
     data class Part(