diff --git a/DESCRIPTION b/DESCRIPTION
index ed9759d..2e88b75 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: dbparser
 Title: 'DrugBank' Database XML Parser
-Version: 1.2.0
+Version: 1.2.1
 Authors@R:
     c(
     person("Mohammed", "Ali", email = "moh_fcis@yahoo.com", role = c("aut", "cre")),
@@ -24,7 +24,7 @@ Imports:
     tibble,
     tools,
     XML
-RoxygenNote: 7.1.1
+RoxygenNote: 7.2.0
 Suggests:
     knitr,
     rmarkdown,
diff --git a/R/dbparser.R b/R/dbparser.R
index c931505..2b63a4a 100644
--- a/R/dbparser.R
+++ b/R/dbparser.R
@@ -40,5 +40,6 @@
 #'  (https://docs.ropensci.org/dbparser/articles/Database_Saving.html)
 #'
 #' @docType package
+#' @keywords internal
 #' @name dbparser
 NULL
diff --git a/R/drug_all_nodes_parser.R b/R/drug_all_nodes_parser.R
index 6fcc9ec..b6ce722 100644
--- a/R/drug_all_nodes_parser.R
+++ b/R/drug_all_nodes_parser.R
@@ -159,6 +159,7 @@ run_all_parsers <-
 #' drug_element(save_table = FALSE)
 #' drug_element(c("drug_ahfs_codes", "drug_carriers"))
 #' }
+#' @keywords internal
 #' @export
 drug_element <-
   function(elements_options = c("all"),
@@ -804,6 +805,7 @@ drug_element <-
 #' \dontrun{
 #' drug_element_options()
 #' }
+#' @keywords internal
 #' @export
 drug_element_options <- function() {
   elements_options <-
diff --git a/R/drugbank_metadata.R b/R/drugbank_metadata.R
index f723d18..5f98e0a 100644
--- a/R/drugbank_metadata.R
+++ b/R/drugbank_metadata.R
@@ -8,6 +8,7 @@
 #' \dontrun{
 #' get_drugbank_version()
 #' }
+#' @keywords internal
 #' @export
 get_drugbank_version <- function() {
   return(pkg_env$version)
@@ -24,6 +25,7 @@ get_drugbank_version <- function() {
 #' \dontrun{
 #' get_drugbank_exported_date()
 #' }
+#' @keywords internal
 #' @export
 get_drugbank_exported_date <- function() {
   return(pkg_env$exported_date)
@@ -41,6 +43,7 @@ get_drugbank_exported_date <- function() {
 #' \dontrun{
 #' get_drugbank_metadata()
 #' }
+#' @keywords internal
 #' @export
 get_drugbank_metadata <- function() {
   return(list(pkg_env$version, pkg_env$exported_date))
diff --git a/man/dbparser.Rd b/man/dbparser.Rd
index 8809e7c..624d49c 100644
--- a/man/dbparser.Rd
+++ b/man/dbparser.Rd
@@ -50,3 +50,4 @@ reference/index (https://docs.ropensci.org/dbparser/reference/index.html)
  (https://docs.ropensci.org/dbparser/articles/Database_Saving.html)
 }
 
+\keyword{internal}
diff --git a/man/drug_element.Rd b/man/drug_element.Rd
index 4a0e9ca..2f9b3b6 100644
--- a/man/drug_element.Rd
+++ b/man/drug_element.Rd
@@ -93,3 +93,4 @@ Other common:
 \code{\link{run_all_parsers}()}
 }
 \concept{common}
+\keyword{internal}
diff --git a/man/drug_element_options.Rd b/man/drug_element_options.Rd
index 5ba405c..3434bf9 100644
--- a/man/drug_element_options.Rd
+++ b/man/drug_element_options.Rd
@@ -23,3 +23,4 @@ Other common:
 \code{\link{run_all_parsers}()}
 }
 \concept{common}
+\keyword{internal}
diff --git a/man/get_drugbank_exported_date.Rd b/man/get_drugbank_exported_date.Rd
index 6dd800d..4131a03 100644
--- a/man/get_drugbank_exported_date.Rd
+++ b/man/get_drugbank_exported_date.Rd
@@ -18,3 +18,4 @@ exported date.
 get_drugbank_exported_date()
 }
 }
+\keyword{internal}
diff --git a/man/get_drugbank_metadata.Rd b/man/get_drugbank_metadata.Rd
index b7d01d6..2c06839 100644
--- a/man/get_drugbank_metadata.Rd
+++ b/man/get_drugbank_metadata.Rd
@@ -18,3 +18,4 @@ exported date.
 get_drugbank_metadata()
 }
 }
+\keyword{internal}
diff --git a/man/get_drugbank_version.Rd b/man/get_drugbank_version.Rd
index 09f1897..b82c899 100644
--- a/man/get_drugbank_version.Rd
+++ b/man/get_drugbank_version.Rd
@@ -17,3 +17,4 @@ drugbank version
 get_drugbank_version()
 }
 }
+\keyword{internal}