diff --git a/Resources-Library.md b/Resources-Library.md
index 12ed6d1..025d097 100644
--- a/Resources-Library.md
+++ b/Resources-Library.md
@@ -17,7 +17,7 @@
 ## General purpose scriptlets
  - most script relies on `Object` _properties_ ([_methods_](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object#Methods_of_the_Object_constructor)), altering them may not be the best idea (you should know what you are doing).
  - "optional" for "string/_regular expression_" parameter defaults to "catch all" (`/.?/`) if not specified.
- - "string" parameter means plain character(s)/word(s), quotes will be taken literally, commas [must be escaped](https://github.com/uBlockOrigin/uAssets/commit/2bec415a9bc4f81b29be3bf083ef1a20552f39db#commitcomment-29327114) in regex literals: `/foo\x2cbar\u002cbaz/`
+ - "string" parameter means plain character(s)/word(s), quotes will be taken literally, commas [must be escaped](https://github.com/uBlockOrigin/uAssets/commit/2bec415a9bc4f81b29be3bf083ef1a20552f39db#commitcomment-29327114) in regex literals: `/foo\x2cbar\u002cbaz/`, after [1.21.7b8](https://github.com/gorhill/uBlock/commit/d67340f14db6ce5b446ef0ff4586b5e4d31f1086#diff-b03ba512faa0934947e57d28dc99b43bL242) commas can be escaped by backslash character (`\,`)
  - "regular expression" parameter means JavaScript [regular expression literal](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions#Writing_a_regular_expression_pattern)
  - mime type is `application/javascript` if not present
  - You can use the short alias form when available for scriptlet name