Add option for dart
diff --git a/docs/options.md b/docs/options.md
index dbc0998..7149b21 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -208,3 +208,7 @@
 1. protokt
    * Website: https://github.com/toasttab/protokt (Currently Private but will be open soon.)
    * Extensions: 1072
+
+1. Dart port of protocol buffers
+   * Website https://github.com/dart-lang/protobuf
+   * Extensions: 1073