diff --git a/man/column_spec.Rd b/man/column_spec.Rd
index bbbd3a4..c3f0e35 100644
--- a/man/column_spec.Rd
+++ b/man/column_spec.Rd
@@ -6,7 +6,7 @@
 \usage{
 column_spec(kable_input, column, width = NULL, bold = FALSE,
   italic = FALSE, monospace = FALSE, color = NULL, background = NULL,
-  border_left = FALSE, border_right = FALSE)
+  border_left = FALSE, border_right = FALSE, extra_css = NULL)
 }
 \arguments{
 \item{kable_input}{Output of \code{knitr::kable()} with \code{format} specified}
@@ -38,6 +38,9 @@
 \item{border_right}{A logical variable indicating whether there should be a
 border line on the right of the selected column. In HTML, you can also pass
 in a character string for the CSS of the border line}
+
+\item{extra_css}{Extra css text to be passed into the cells of the row. Note
+that it's not for the whole column but to each individual cells}
 }
 \description{
 This function allows users to select a column and then specify