diff --git a/7z2hashcat.pl b/7z2hashcat.pl
index b67e7e9..e57c8df 100755
--- a/7z2hashcat.pl
+++ b/7z2hashcat.pl
@@ -17,10 +17,11 @@
 # April 2015
 
 # date last updated:
-# 13th Aug 2021
+# 20th Sep 2021
 
 # dependencies:
 # Compress::Raw::Lzma
+# File::Basename
 
 # supported file types:
 # - is able to identify and parse .7z files