diff --git a/doc/docs/doc/README.md b/doc/docs/doc/README.md
index 49356b8..7f5aab1 100755
--- a/doc/docs/doc/README.md
+++ b/doc/docs/doc/README.md
@@ -170,6 +170,7 @@ Usage: yue [options|files|directories] ...
    -b       Dump compile time (doesn't write output)
    -g       Dump global variables used in NAME LINE COLUMN
    -l       Write line numbers from source codes
+   -c       Reserve comments before statement from source codes
    -w path  Watch changes and compile every file under directory
    -v       Print version
    --       Read from standard in, print to standard out