diff --git a/federation/pdu/pdu.go b/federation/pdu/pdu.go
index 2b45087c..2dbdefc1 100644
--- a/federation/pdu/pdu.go
+++ b/federation/pdu/pdu.go
@@ -76,9 +76,9 @@ type PDU struct {
 	Unknown jsontext.Value `json:",unknown"`
 
 	// Deprecated legacy fields
-	DeprecatedPrevState  any `json:"prev_state,omitzero"`
-	DeprecatedOrigin     any `json:"origin,omitzero"`
-	DeprecatedMembership any `json:"membership,omitzero"`
+	DeprecatedPrevState  jsontext.Value `json:"prev_state,omitzero"`
+	DeprecatedOrigin     jsontext.Value `json:"origin,omitzero"`
+	DeprecatedMembership jsontext.Value `json:"membership,omitzero"`
 }
 
 var ErrPDUIsNil = errors.New("PDU is nil")
diff --git a/federation/pdu/v1.go b/federation/pdu/v1.go
index 0e4c95e9..9557f8ab 100644
--- a/federation/pdu/v1.go
+++ b/federation/pdu/v1.go
@@ -75,9 +75,9 @@ type RoomV1PDU struct {
 	Unknown jsontext.Value `json:",unknown"`
 
 	// Deprecated legacy fields
-	DeprecatedPrevState  any `json:"prev_state,omitzero"`
-	DeprecatedOrigin     any `json:"origin,omitzero"`
-	DeprecatedMembership any `json:"membership,omitzero"`
+	DeprecatedPrevState  jsontext.Value `json:"prev_state,omitzero"`
+	DeprecatedOrigin     jsontext.Value `json:"origin,omitzero"`
+	DeprecatedMembership jsontext.Value `json:"membership,omitzero"`
 }
 
 func (pdu *RoomV1PDU) GetRoomID() (id.RoomID, error) {