diff --git a/R/kableExtra-package.R b/R/kableExtra-package.R
index 72978fb..a753a32 100644
--- a/R/kableExtra-package.R
+++ b/R/kableExtra-package.R
@@ -1,7 +1,7 @@
 #' kableExtra
 #'
 #' @importFrom stringr str_count str_split str_match str_detect str_match_all
-#' str_extract str_replace_all str_trim str_extract_all
+#' str_extract str_replace_all str_trim str_extract_all str_sub
 #' @importFrom xml2 read_xml xml_attr xml_has_attr xml_attr<- read_html
 #' xml_child xml_children xml_name xml_add_sibling xml_add_child xml_text
 #' xml_text<-