diff --git a/dynamic_programming/regex_match.py b/dynamic_programming/regex_match.py
index dc76eedeb..bb2ed2d3a 100644
--- a/dynamic_programming/regex_match.py
+++ b/dynamic_programming/regex_match.py
@@ -3,6 +3,8 @@ Regex matching check if a text matches wildcard pattern or not.
 Pattern:
     '.' Matches any single character.
     '*' Matches zero or more of the preceding element.
+More info:
+    https://medium.com/trick-the-interviwer/regular-expression-matching-9972eb74c03
 """