diff --git a/DESCRIPTION b/DESCRIPTION
index 730e1fc6a..0d0c988c1 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: openxlsx2
 Title: Read, Write and Edit 'xlsx' Files
-Version: 1.3
+Version: 1.3.0.9000
 Language: en-US
 Authors@R: c(
   person("Jordan Mark", "Barbone", email = "jmbarbone@gmail.com", role = "aut", comment = c(ORCID = "0000-0001-9788-3628")),
diff --git a/NEWS.md b/NEWS.md
index 0f088ee42..7cc8673f5 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,13 @@
+# openxlsx2 (development version)
+
+## New features
+
+* Experimental support for calculation of pivot table fields. [892](https://github.com/JanMarvin/openxlsx2/pull/892)
+
+
+***************************************************************************
+
+
 # openxlsx2 1.3
 
 ## Documentation improvement
diff --git a/R/class-workbook-wrappers.R b/R/class-workbook-wrappers.R
index 3898543fd..e31bd4034 100644
--- a/R/class-workbook-wrappers.R
+++ b/R/class-workbook-wrappers.R
@@ -327,6 +327,10 @@ wb_add_data_table <- function(
 #' `show_data_as` can be any of `normal`, `difference`, `percent`, `percentDiff`,
 #' `runTotal`, `percentOfRow`, `percentOfCol`, `percentOfTotal`, `index`.
 #'
+#' It is possible to calculate data fields if the formula is assigned as a
+#' variable name for the field to calculate. This would look like this:
+#' `data = c("am", "disp/cyl" = "New")`
+#'
 #' Possible `params` arguments are listed below. Pivot tables accepts more
 #' parameters, but they were either not tested or misbehaved (probably because
 #' we misunderstood how the parameter should be used).
diff --git a/man/wb_add_pivot_table.Rd b/man/wb_add_pivot_table.Rd
index 2b04c1d6f..fc411dcd4 100644
--- a/man/wb_add_pivot_table.Rd
+++ b/man/wb_add_pivot_table.Rd
@@ -73,6 +73,10 @@ output file and cause spreadsheet software to crash.
 \code{show_data_as} can be any of \code{normal}, \code{difference}, \code{percent}, \code{percentDiff},
 \code{runTotal}, \code{percentOfRow}, \code{percentOfCol}, \code{percentOfTotal}, \code{index}.
 
+It is possible to calculate data fields if the formula is assigned as a
+variable name for the field to calculate. This would look like this:
+\code{data = c("am", "disp/cyl" = "New")}
+
 Possible \code{params} arguments are listed below. Pivot tables accepts more
 parameters, but they were either not tested or misbehaved (probably because
 we misunderstood how the parameter should be used).