diff --git a/INSTALL b/INSTALL
index f97da8c15246c0d3c6c05c69cd7e1d98a8664b2d..feb381852beccb72f1bb4541c6ec410f7a54d9b2 100644
--- a/INSTALL
+++ b/INSTALL
@@ -7,6 +7,7 @@ Installing OpenTrafficShaper:
 
 - POE
 - Config::IniFiles
+- DateTime
 
 - Perl 5.6+