diff --git a/protos/protos.json b/protos/protos.json
index 70e570e04..ad639ed00 100644
--- a/protos/protos.json
+++ b/protos/protos.json
@@ -1,4 +1,7 @@
 {
+  "options": {
+    "syntax": "proto3"
+  },
   "nested": {
     "google": {
       "nested": {