diff --git a/README.md b/README.md
index 5147047b3..059982074 100644
--- a/README.md
+++ b/README.md
@@ -654,6 +654,7 @@ Translates between file formats and generates static code.
   --no-comments    Does not output any JSDoc comments.
 
   --force-long     Enfores the use of 'Long' for s-/u-/int64 and s-/fixed64 fields.
+  --force-number   Enfores the use of 'number' for s-/u-/int64 and s-/fixed64 fields.
   --force-message  Enfores the use of message instances instead of plain objects.
 
 usage: pbjs [options] file1.proto file2.json ...  (or pipe)  other | pbjs [options] -