diff --git a/setup.py b/setup.py
index d5b5a9d69..0b90b7a09 100644
--- a/setup.py
+++ b/setup.py
@@ -110,10 +110,12 @@ setup(
     # Installation data
     packages=['supybot',
               'supybot.others',
-              'supybot.plugins',],
+              'supybot.plugins',
+              'supybot.others.dateutil',],
     package_dir={'supybot': 'src',
                  'supybot.others': 'others',
-                 'supybot.plugins': 'plugins',},
+                 'supybot.plugins': 'plugins',
+                 'supybot.others.dateutil': 'others/dateutil'},
     scripts=['scripts/supybot',
              'scripts/supybot-wizard',
              'scripts/supybot-adduser',