diff --git a/changelog/unreleased/pull-4737 b/changelog/unreleased/pull-4737
new file mode 100644
index 000000000..2637c8f83
--- /dev/null
+++ b/changelog/unreleased/pull-4737
@@ -0,0 +1,5 @@
+Enhancement: include snapshot id in reason field of forget JSON output
+
+The JSON output of the `forget` command now includes the `id` and `short_id` of a snapshot in the `reason` field.
+
+https://github.com/restic/restic/pull/4737
diff --git a/cmd/restic/cmd_forget.go b/cmd/restic/cmd_forget.go
index f2fc1da8c..d634576c0 100644
--- a/cmd/restic/cmd_forget.go
+++ b/cmd/restic/cmd_forget.go
@@ -245,16 +245,16 @@ func runForget(ctx context.Context, opts ForgetOptions, pruneOptions PruneOption
 					PrintSnapshots(globalOptions.stdout, keep, reasons, opts.Compact)
 					Printf("\n")
 				}
-				addJSONSnapshots(&fg.Keep, keep)
+				fg.Keep = asJSONSnapshots(keep)
 
 				if len(remove) != 0 && !gopts.Quiet && !gopts.JSON {
 					Printf("remove %d snapshots:\n", len(remove))
 					PrintSnapshots(globalOptions.stdout, remove, nil, opts.Compact)
 					Printf("\n")
 				}
-				addJSONSnapshots(&fg.Remove, remove)
+				fg.Remove = asJSONSnapshots(remove)
 
-				fg.Reasons = reasons
+				fg.Reasons = asJSONKeeps(reasons)
 
 				jsonGroups = append(jsonGroups, &fg)
 
@@ -302,23 +302,47 @@ func runForget(ctx context.Context, opts ForgetOptions, pruneOptions PruneOption
 
 // ForgetGroup helps to print what is forgotten in JSON.
 type ForgetGroup struct {
-	Tags    []string            `json:"tags"`
-	Host    string              `json:"host"`
-	Paths   []string            `json:"paths"`
-	Keep    []Snapshot          `json:"keep"`
-	Remove  []Snapshot          `json:"remove"`
-	Reasons []restic.KeepReason `json:"reasons"`
+	Tags    []string     `json:"tags"`
+	Host    string       `json:"host"`
+	Paths   []string     `json:"paths"`
+	Keep    []Snapshot   `json:"keep"`
+	Remove  []Snapshot   `json:"remove"`
+	Reasons []KeepReason `json:"reasons"`
 }
 
-func addJSONSnapshots(js *[]Snapshot, list restic.Snapshots) {
+func asJSONSnapshots(list restic.Snapshots) []Snapshot {
+	var resultList []Snapshot
 	for _, sn := range list {
 		k := Snapshot{
 			Snapshot: sn,
 			ID:       sn.ID(),
 			ShortID:  sn.ID().Str(),
 		}
-		*js = append(*js, k)
+		resultList = append(resultList, k)
 	}
+	return resultList
+}
+
+// KeepReason helps to print KeepReasons as JSON with Snapshots with their ID included.
+type KeepReason struct {
+	Snapshot Snapshot `json:"snapshot"`
+	Matches  []string `json:"matches"`
+}
+
+func asJSONKeeps(list []restic.KeepReason) []KeepReason {
+	var resultList []KeepReason
+	for _, keep := range list {
+		k := KeepReason{
+			Snapshot: Snapshot{
+				Snapshot: keep.Snapshot,
+				ID:       keep.Snapshot.ID(),
+				ShortID:  keep.Snapshot.ID().Str(),
+			},
+			Matches: keep.Matches,
+		}
+		resultList = append(resultList, k)
+	}
+	return resultList
 }
 
 func printJSONForget(stdout io.Writer, forgets []*ForgetGroup) error {
diff --git a/doc/075_scripting.rst b/doc/075_scripting.rst
index d51516cbe..28419c292 100644
--- a/doc/075_scripting.rst
+++ b/doc/075_scripting.rst
@@ -367,13 +367,13 @@ Snapshot object
 
 Reason object
 
-+----------------+---------------------------------------------------------+
-| ``snapshot``   | Snapshot object, without ``id`` and ``short_id`` fields |
-+----------------+---------------------------------------------------------+
-| ``matches``    | Array containing descriptions of the matching criteria  |
-+----------------+---------------------------------------------------------+
-| ``counters``   | Object containing counters used by the policies         |
-+----------------+---------------------------------------------------------+
++----------------+-----------------------------------------------------------+
+| ``snapshot``   | Snapshot object, including ``id`` and ``short_id`` fields |
++----------------+-----------------------------------------------------------+
+| ``matches``    | Array containing descriptions of the matching criteria    |
++----------------+-----------------------------------------------------------+
+| ``counters``   | Object containing counters used by the policies           |
++----------------+-----------------------------------------------------------+
 
 
 init