diff --git a/src/tokenizer.rs b/src/tokenizer.rs
index fe5002b7..ad7df61b 100644
--- a/src/tokenizer.rs
+++ b/src/tokenizer.rs
@@ -99,7 +99,7 @@ pub enum Token {
     /// "National" string literal: i.e: N'string'
     NationalStringLiteral(String),
     /// Quote delimited literal. Examples `Q'{ab'c}'`, `Q'|ab'c|'`, `Q'|ab|c|'`
-    /// [Oracle](https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/Literals.html)
+    /// [Oracle](https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/Literals.html#GUID-1824CBAA-6E16-4921-B2A6-112FB02248DA)
     QuoteDelimitedStringLiteral(char, String, char),
     /// "Nationa" quote delimited literal. Examples `NQ'{ab'c}'`, `NQ'|ab'c|'`, `NQ'|ab|c|'`
     /// [Oracle](https://docs.oracle.com/en/database/oracle/oracle-database/21/sqlrf/Literals.html)