diff --git a/go/operation/system_message.pb.go b/go/operation/system_message.pb.go
index 32e6a6640..742a1ca4e 100644
--- a/go/operation/system_message.pb.go
+++ b/go/operation/system_message.pb.go
@@ -14,7 +14,7 @@ It has these top-level messages:
 */
 package operation
 
-import proto "code.google.com/p/goprotobuf/proto"
+import proto "github.com/golang/protobuf/proto"
 import math "math"
 
 // Reference imports to suppress errors if they are not otherwise used.