Update copyright to 2015
diff --git a/test/cpp/interop/server.cc b/test/cpp/interop/server.cc
index a839977..b08030f 100644
--- a/test/cpp/interop/server.cc
+++ b/test/cpp/interop/server.cc
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright 2014, Google Inc.
+ * Copyright 2015, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -224,4 +224,4 @@
 
   grpc_shutdown();
   return 0;
-}
+}
\ No newline at end of file