Functions included in older versions of the package that used functions from the RcppCWB package had been dropped. An unnecessary declaration of RcppCWB in the 'Imports:' section of the DESCRIPTION file has been removed. The data objects germaparl_by_lp and germaparl_by_year were included as data.table objects, making the presence of the data.table package necessary. To reduce the number of packages imported from and to avoid an error that emerged on Windows, these tables are included as data.frame objects. The documentation of the data objects germaparl_by_lp and germaparl_by_year now includes an explanation of what is reported in rows and columns. The germaparl_by_year table now includes a column unknown_total and unknown_share with the total number of tokens that cannot be lemmatized, and their share, respectively. On this basis, an error in the calculation of the aggregate unknown share for all years can be corrected.