diff --git a/prompb/README.md b/prompb/README.md
index d71438afb..c1acb508a 100644
--- a/prompb/README.md
+++ b/prompb/README.md
@@ -6,3 +6,4 @@ If however you have modified the defs and do need to re-compile, run
 
 In order for the [script][../scripts/genproto.sh] to run, you'll need `protoc` (version 3.15.8) in
 your PATH.
+