diff --git a/BACKLOG.md b/BACKLOG.md
index fe45946..798484c 100644
--- a/BACKLOG.md
+++ b/BACKLOG.md
@@ -4,6 +4,10 @@
 
 * Split non-core functionality out of libbase/libbase.h and require explicit
   includes. While doing so, benchmark compilation time.
+  
+## bs_arg
+
+* Support "extra" arguments of no type, eg. for `--help` or `--version`.
 
 ## bs_file