diff --git a/README.md b/README.md
index 031bce38..d2aadaaa 100644
--- a/README.md
+++ b/README.md
@@ -295,7 +295,7 @@ import { v5 as uuidv5 } from 'uuid';
 uuidv5('https://www.w3.org/', uuidv5.URL); // ⇨ 'c106a26a-21bb-5538-8bf2-57095d1976c1'
 ```
 
-### uuid.v6([options, [, buffer[, offset]]])
+### uuid.v6([options[, buffer[, offset]]])
 
 Create an RFC version 6 (timestamp, reordered) UUID
 
diff --git a/README_js.md b/README_js.md
index 3bc28350..aeffafb3 100644
--- a/README_js.md
+++ b/README_js.md
@@ -303,7 +303,7 @@ import { v5 as uuidv5 } from 'uuid';
 uuidv5('https://www.w3.org/', uuidv5.URL); // RESULT
 ```
 
-### uuid.v6([options, [, buffer[, offset]]])
+### uuid.v6([options[, buffer[, offset]]])
 
 Create an RFC version 6 (timestamp, reordered) UUID