diff -up affyio/affyio/DESCRIPTION.fixdep affyio/affyio/DESCRIPTION
--- affyio/affyio/DESCRIPTION.fixdep	2018-05-16 12:06:44.114260296 -0400
+++ affyio/affyio/DESCRIPTION	2018-05-16 12:07:43.584933281 -0400
@@ -3,7 +3,7 @@ Version: 1.50.0
 Title: Tools for parsing Affymetrix data files
 Author: Ben Bolstad <bmb@bmbolstad.com>
 Maintainer: Ben Bolstad <bmb@bmbolstad.com>
-Depends: R (>= 2.6.0)
+Depends: R (>= 2.6.0), methods
 Description: Routines for parsing Affymetrix data files based upon file format information. Primary focus is on accessing the CEL and CDF file formats.
 License: LGPL (>= 2)
 URL: https://github.com/bmbolstad/affyio