diff --git a/DESCRIPTION b/DESCRIPTION
index e913897b..fde45585 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -30,7 +30,7 @@ LazyData: true
 URL: https://github.com/MSKCC-Epi-Bio/gnomeR,
     https://mskcc-epi-bio.github.io/gnomeR/
 BugReports: https://github.com/MSKCC-Epi-Bio/gnomeR/issues
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.2
 Depends: R (>= 3.6)
 biocViews: 
     ComplexHeatmap,
diff --git a/man/subset_by_frequency.Rd b/man/subset_by_frequency.Rd
index ddf692f2..2249ba81 100644
--- a/man/subset_by_frequency.Rd
+++ b/man/subset_by_frequency.Rd
@@ -4,7 +4,7 @@
 \alias{subset_by_frequency}
 \title{Subset a Binary Matrix By Alteration Frequency Threshold}
 \usage{
-subset_by_frequency(gene_binary, t = 0.1, other_vars = NULL)
+subset_by_frequency(gene_binary, t = 0.1, other_vars = NULL, by = NULL)
 }
 \arguments{
 \item{gene_binary}{A data frame with a row for each sample and column for each
@@ -15,6 +15,8 @@ with values of 0, 1 or NA.}
 
 \item{other_vars}{One or more column names (quoted or unquoted) in data to be retained
 in resulting data frame. Default is NULL.}
+
+\item{by}{Variable used to subset the data. Default is NULL.}
 }
 \value{
 a data frame with a \code{sample_id} column and columns for
diff --git a/tests/testthat/Rplots.pdf b/tests/testthat/Rplots.pdf
index f1296147..7c5c2e20 100644
Binary files a/tests/testthat/Rplots.pdf and b/tests/testthat/Rplots.pdf differ