diff --git a/src/main/java/com/convertapi/client/RequestBodyStream.java b/src/main/java/com/convertapi/client/RequestBodyStream.java
index dbf44aa..cc97685 100644
--- a/src/main/java/com/convertapi/client/RequestBodyStream.java
+++ b/src/main/java/com/convertapi/client/RequestBodyStream.java
@@ -2,7 +2,6 @@
 
 import okhttp3.MediaType;
 import okhttp3.RequestBody;
-import okhttp3.internal.Util;
 import okio.BufferedSink;
 import okio.Okio;
 import okio.Source;
@@ -21,12 +20,8 @@ public MediaType contentType() {
 
             @Override
             public void writeTo(BufferedSink sink) throws IOException {
-                Source source = null;
-                try {
-                    source = Okio.source(inputStream);
+                try (Source source = Okio.source(inputStream)) {
                     sink.writeAll(source);
-                } finally {
-                    Util.closeQuietly(source);
                 }
             }
         };