diff --git a/README.md b/README.md
index 6c79a0d..132772b 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,8 @@ Options (all optional) include:
       default, codemod applies the regex one line at a time.
     -d
       The path whose ancestor files are to be explored.  Defaults to current dir.
+    -i
+      Make your search case-insensitive
     --start
       A path:line_number-formatted position somewhere in the hierarchy from which
       to being exploring, or a percentage (e.g. "--start 25%") of the way through