diff --git a/README.md b/README.md
index 7786b67..26e769e 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,7 @@ Add a `.chkbitignore` file containing the names of the files/directories you wis
 
 - each line should contain exactly one name
 - lines starting with `#` are skipped
+- you may use [Unix shell-style wildcards](https://docs.python.org/3.8/library/fnmatch.html)
 
 ## FAQ