Mapping between CPAN modules and Debian packages changed This Debian package (libtext-csv-xs-perl) contains the perl CPAN module Text::CSV_XS. This module was packaged as libtext-csv-perl in Debian before. From version 1.05, the Debian package libtext-csv-perl contains the perl module Text::CSV. Text::CSV is a generic perl module that can call Text::CSV_XS if available. Indeed, Text::CSV_XS provides an optimized version of Text::CSV routines. The old libtext-csv-perl (with Text::CSV_XS) had a patch to provide the Text::CSV interface. So replacing the old patched Text::CSV_XS by the new Text::CSV (ie only upgrading the 'libtext-csv-perl' package) should works. However, you are strongly encouraged to install this new libtext-csv-xs-perl package (recommended by the new libtext-csv-perl package) to keep previous performance.