diff --git a/packages/mosaic/framework/tools/lease-broker/daemon.py b/packages/mosaic/framework/tools/lease-broker/daemon.py
index 54fe7424..1d8b1390 100644
--- a/packages/mosaic/framework/tools/lease-broker/daemon.py
+++ b/packages/mosaic/framework/tools/lease-broker/daemon.py
@@ -39,7 +39,7 @@ MAX_FRAME: Final = 64 * 1024
 MAX_STATE: Final = 4 * 1024 * 1024
 MAX_PENDING_TOKENS: Final = 256
 MAX_IN_FLIGHT_CONNECTIONS: Final = 16
-MAX_LEASE_TTL_SECONDS: Final = 300
+MAX_LEASE_TTL_SECONDS: Final = 3600
 STATE_VERSION: Final = 1
 READ_DEADLINE_SECONDS: Final = 1.0
 HANDLE_QUEUE_TIMEOUT_SECONDS: Final = 1.0
diff --git a/packages/mosaic/framework/tools/lease-broker/lease_promote.py b/packages/mosaic/framework/tools/lease-broker/lease_promote.py
index 2588d8c5..a29ea8af 100644
--- a/packages/mosaic/framework/tools/lease-broker/lease_promote.py
+++ b/packages/mosaic/framework/tools/lease-broker/lease_promote.py
@@ -84,7 +84,7 @@ BROKER_TIMEOUT_SECONDS: Final = 3.0
 SCHEMA_VERSION: Final = 1
 MANIFEST_VERSION: Final = 1
 GENERATOR_VERSION: Final = "mosaic/lease_promote@1"
-DEFAULT_TTL_SECONDS: Final = 300
+DEFAULT_TTL_SECONDS: Final = 3600
 
 # Normative sources whose exact bytes bind the lease, in binding order. Order is
 # load-bearing: ``h_source`` frames the resolved sequence, so reordering changes