diff --git a/schemas/17-Hiro-Streaks.json b/schemas/17-Hiro-Streaks.json
index 599b6ee..e628442 100644
--- a/schemas/17-Hiro-Streaks.json
+++ b/schemas/17-Hiro-Streaks.json
@@ -61,6 +61,10 @@
               "type": "integer",
               "minimum": 0
             },
+            "grace_window_sec": {
+              "type": "integer",
+              "minimum": 0
+            },
             "rewards": {
               "type": "array",
               "items": {
diff --git a/streaks.go b/streaks.go
index 6983411..c14af00 100644
--- a/streaks.go
+++ b/streaks.go
@@ -37,6 +37,7 @@ type StreaksConfigStreak struct {
 	MaxIdleCountDecay    int64                        `json:"max_idle_count_decay,omitempty"`
 	ResetCronexpr        string                       `json:"reset_cronexpr,omitempty"`
 	TimeOffsetSec        int64                        `json:"time_offset_sec,omitempty"`
+	GraceWindowSec       int64                        `json:"grace_window_sec,omitempty"`
 	Rewards              []*StreaksConfigStreakReward `json:"rewards,omitempty"`
 	StartTimeSec         int64                        `json:"start_time_sec,omitempty"`
 	EndTimeSec           int64                        `json:"end_time_sec,omitempty"`