diff --git a/changelog/unreleased/pull-1735 b/changelog/unreleased/pull-1735
new file mode 100644
index 000000000..2cfd115d8
--- /dev/null
+++ b/changelog/unreleased/pull-1735
@@ -0,0 +1,9 @@
+Enhancement: Allow keeping a time range of snaphots
+
+We've added the `--keep-within` option to the `forget` command. It instructs
+restic to keep all snapshots within the given duration since the newest
+snapshot. For example, running `restic forget --keep-within 5m7d` will keep all
+snapshots which have been made in the five months and seven days since the
+latest snapshot.
+
+https://github.com/restic/restic/pull/1735
diff --git a/doc/060_forget.rst b/doc/060_forget.rst
index ab5274758..1ca614a79 100644
--- a/doc/060_forget.rst
+++ b/doc/060_forget.rst
@@ -159,6 +159,10 @@ The ``forget`` command accepts the following parameters:
    snapshots, only keep the last one for that year.
 -  ``--keep-tag`` keep all snapshots which have all tags specified by
    this option (can be specified multiple times).
+-  ``--keep-within duration`` keep all snapshots which have been made within
+   the duration of the latest snapshot. ``duration`` needs to be a number of
+   years, months, and days, e.g. ``2y5m7d`` will keep all snapshots made in the
+   two years, five months, and seven days before the latest snapshot.
 
 Additionally, you can restrict removing snapshots to those which have a
 particular hostname with the ``--hostname`` parameter, or tags with the