diff --git a/gcloud-java-resourcemanager/src/main/java/com/google/gcloud/resourcemanager/testing/LocalResourceManagerHelper.java b/gcloud-java-resourcemanager/src/main/java/com/google/gcloud/resourcemanager/testing/LocalResourceManagerHelper.java
index 51c0d5ee28e5..8238fd0f1959 100644
--- a/gcloud-java-resourcemanager/src/main/java/com/google/gcloud/resourcemanager/testing/LocalResourceManagerHelper.java
+++ b/gcloud-java-resourcemanager/src/main/java/com/google/gcloud/resourcemanager/testing/LocalResourceManagerHelper.java
@@ -185,6 +185,7 @@ private static void writeResponse(HttpExchange exchange, Response response) {
     exchange.getResponseHeaders().set("Content-type", "application/json; charset=UTF-8");
     OutputStream outputStream = exchange.getResponseBody();
     try {
+      exchange.getResponseHeaders().add("Connection", "close");
       exchange.sendResponseHeaders(response.code(), response.body().length());
       outputStream.write(response.body().getBytes(StandardCharsets.UTF_8));
       outputStream.close();