diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 276f1510c6..3d5a066c31 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -270,6 +270,11 @@ OPTIONS
 	(see linkgit:git-apply[1]) that applies the patch.
 	Incompatible with the --interactive option.
 
+--committer-date-is-author-date::
+--ignore-date::
+	These flags are passed to 'git-am' to easily change the dates
+	of the rebased commits (see linkgit:git-am[1]).
+
 -i::
 --interactive::
 	Make a list of the commits which are about to be rebased.  Let the
diff --git a/git-rebase.sh b/git-rebase.sh
index d38ab0b83f..0ade699228 100755
--- a/git-rebase.sh
+++ b/git-rebase.sh
@@ -309,6 +309,10 @@ do
 			;;
 		esac
 		;;
+	--committer-date-is-author-date|--ignore-date)
+		git_am_opt="$git_am_opt $1"
+		force_rebase=t
+		;;
 	-C*)
 		git_am_opt="$git_am_opt $1"
 		;;