Register mime type

I'm trying to add a new mime type on our web server so that FileGetMimeType() will return /application/x-sas-data for a .sas7bdat file.  I've tried both updating the /etc/mime.types and putting AddType into the httpd.conf file and restarted httpd without success.

Red Hat Linux 7.2

Apache 2.4.6

Coldfusion 11

Any help would be appreciated.