diff --git a/NEWS.md b/NEWS.md
index 601c8a7e1c..039674b907 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -25,7 +25,9 @@
 
     The second break caused by `bit64` was the addition of a `copy` function. Since `data.table::copy` is long standing we hope that `bit64` can rename its new `copy` function. Otherwise, users of `data.table` may need to prefix every occurrence of `copy` with `data.table::copy` if they use `bit64` too. Again, this impacted `data.table`'s tests which mimic a user's environment; not `data.table` itself per se.
 
-    Thanks to Cole Miller for the PR to accomodate `bit64`'s update. 
+    Thanks to Cole Miller for the PR to accomodate `bit64`'s update.
+
+2. `?.NGRP` now displays the help page as intended, [#4946](https://github.com/Rdatatable/data.table/issues/4649). Thanks to @KyleHaynes for posting the issue, and Cole Miller for the fix. `.NGRP` is a symbol new in v1.13.0; see below in this file.
 
 
 # data.table [v1.13.0](https://github.com/Rdatatable/data.table/milestone/17?closed=1)  (24 Jul 2020)
diff --git a/man/special-symbols.Rd b/man/special-symbols.Rd
index a22042af1a..30cfedc5fa 100644
--- a/man/special-symbols.Rd
+++ b/man/special-symbols.Rd
@@ -7,6 +7,7 @@
 \alias{.BY}
 \alias{.N}
 \alias{.EACHI}
+\alias{.NGRP}
 \title{ Special symbols }
 \description{
     \code{.SD}, \code{.BY}, \code{.N}, \code{.I}, \code{.GRP}, and \code{.NGRP} are \emph{read-only} symbols for use in \code{j}. \code{.N} can be used in \code{i} as well. See the vignettes and examples here and in \code{\link{data.table}}.