diff --git a/R/data.R b/R/data.R
index 3f5c320..f71a16c 100644
--- a/R/data.R
+++ b/R/data.R
@@ -9,7 +9,7 @@
 #' @format A character vector of length 600.
 #' @source Pages 26--27 of Microsoft's document "Excel (.xlsx) extensions to the
 #' office openxml spreadsheetml file format p.24"
-#' \url{https://docs.microsoft.com/en-us/openspecs/office_standards/ms-xlsx/2c5dee00-eff2-4b22-92b6-0738acd4475e},
+#' \url{https://learn.microsoft.com/en-us/openspecs/office_standards/ms-xlsx/2c5dee00-eff2-4b22-92b6-0738acd4475e},
 #' revision 8.0 2017-06-20.
 "excel_functions"
 
diff --git a/man/excel_functions.Rd b/man/excel_functions.Rd
index cdaf3e1..5604d0c 100644
--- a/man/excel_functions.Rd
+++ b/man/excel_functions.Rd
@@ -10,7 +10,7 @@ A character vector of length 600.
 \source{
 Pages 26--27 of Microsoft's document "Excel (.xlsx) extensions to the
 office openxml spreadsheetml file format p.24"
-\url{https://docs.microsoft.com/en-us/openspecs/office_standards/ms-xlsx/2c5dee00-eff2-4b22-92b6-0738acd4475e},
+\url{https://learn.microsoft.com/en-us/openspecs/office_standards/ms-xlsx/2c5dee00-eff2-4b22-92b6-0738acd4475e},
 revision 8.0 2017-06-20.
 }
 \usage{