diff --git a/tests/data/large_network/genesis_ledger.json b/tests/data/large_network/genesis_ledger.json
index c713b21..0d4419d 100644
--- a/tests/data/large_network/genesis_ledger.json
+++ b/tests/data/large_network/genesis_ledger.json
@@ -6,6 +6,7 @@
     "k": 20,
     "delta": 0,
     "slots_per_epoch": 480,
+    "grace_period_slots": 150,
     "slots_per_sub_window": 2,
     "genesis_state_timestamp": "2023-09-11 19:45:11.028031Z"
   },
@@ -5036,4 +5037,4 @@
       }
     ]
   }
-}
+}
\ No newline at end of file
diff --git a/tests/data/small_network/genesis_ledger.json b/tests/data/small_network/genesis_ledger.json
index cf9f02e..0195217 100644
--- a/tests/data/small_network/genesis_ledger.json
+++ b/tests/data/small_network/genesis_ledger.json
@@ -6,6 +6,7 @@
     "k": 20,
     "delta": 0,
     "slots_per_epoch": 480,
+    "grace_period_slots": 150,
     "slots_per_sub_window": 2,
     "genesis_state_timestamp": "2023-09-11 20:05:53.217229Z"
   },
@@ -536,4 +537,4 @@
       }
     ]
   }
-}
+}
\ No newline at end of file
diff --git a/tests/data/uptime_service_network/genesis_ledger.json b/tests/data/uptime_service_network/genesis_ledger.json
index 36ab10d..d7d14ef 100644
--- a/tests/data/uptime_service_network/genesis_ledger.json
+++ b/tests/data/uptime_service_network/genesis_ledger.json
@@ -6,6 +6,7 @@
         "k": 20,
         "delta": 0,
         "slots_per_epoch": 480,
+        "grace_period_slots": 150,
         "slots_per_sub_window": 2,
         "genesis_state_timestamp": "2023-10-16 12:00:03.092497Z"
     },