diff -r dec10a3eb95f Lib/mimetypes.py
--- a/Lib/mimetypes.py	Sat Feb 23 08:19:00 2013 +0200
+++ b/Lib/mimetypes.py	Sat Feb 23 18:24:25 2013 +0100
@@ -418,6 +418,7 @@
         '.cpio'   : 'application/x-cpio',
         '.csh'    : 'application/x-csh',
         '.css'    : 'text/css',
+        '.csv'    : 'text/csv',
         '.dll'    : 'application/octet-stream',
         '.doc'    : 'application/msword',
         '.dot'    : 'application/msword',