diff --git a/types/bid.go b/types/bid.go
index cf61184..9358cbd 100644
--- a/types/bid.go
+++ b/types/bid.go
@@ -25,6 +25,8 @@ type ValidatorBid struct {
 	MaximumDelegationAmount uint64 `json:"maximum_delegation_amount"`
 	// Vesting schedule for a genesis validator. `None` if non-genesis validator.
 	VestingSchedule *VestingSchedule `json:"vesting_schedule"`
+	// Number of slots reserved for specific delegators
+	ReservedSlots uint8 `json:"reserved_slots"`
 }
 
 // Bid An entry in the validator map.
diff --git a/types/prepayment.go b/types/prepayment.go
new file mode 100644
index 0000000..9881ec9
--- /dev/null
+++ b/types/prepayment.go
@@ -0,0 +1,10 @@
+package types
+
+import "github.com/make-software/casper-go-sdk/v2/types/key"
+
+// PrepaymentKind Container for bytes recording location, type and data for a gas pre payment
+type PrepaymentKind struct {
+	Receipt        key.Hash `json:"receipt"`
+	PrepaymentData HexBytes `json:"prepayment_data"`
+	PrepaymentKind uint8    `json:"prepayment_kind"`
+}
diff --git a/types/reservation.go b/types/reservation.go
deleted file mode 100644
index ccb978d..0000000
--- a/types/reservation.go
+++ /dev/null
@@ -1,10 +0,0 @@
-package types
-
-import "github.com/make-software/casper-go-sdk/v2/types/key"
-
-// ReservationKind Container for bytes recording location, type and data for a gas reservation
-type ReservationKind struct {
-	Receipt         key.Hash `json:"receipt"`
-	ReservationData HexBytes `json:"reservation_data"`
-	ReservationKind uint8    `json:"reservation_kind"`
-}
diff --git a/types/stored_value.go b/types/stored_value.go
index 5ba05e8..cce2e39 100644
--- a/types/stored_value.go
+++ b/types/stored_value.go
@@ -24,6 +24,6 @@ type StoredValue struct {
 	MessageTopic      *MessageTopicSummary `json:"MessageTopic,omitempty"`
 	Message           *MessageChecksum     `json:"Message,omitempty"`
 	NamedKey          *NamedKeyValue       `json:"NamedKey,omitempty"`
-	Reservation       *ReservationKind     `json:"Reservation,omitempty"`
+	Prepayment        *PrepaymentKind      `json:"Prepayment,omitempty"`
 	EntryPoint        *EntryPointValue     `json:"EntryPoint,omitempty"`
 }