diff --git a/federationapi/routing/invite.go b/federationapi/routing/invite.go
index 4b367e004..cae92417d 100644
--- a/federationapi/routing/invite.go
+++ b/federationapi/routing/invite.go
@@ -16,11 +16,13 @@ package routing
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/clientapi/producers"
 	"github.com/matrix-org/dendrite/common/config"
+	"github.com/matrix-org/dendrite/roomserver/version"
 	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
 )
@@ -44,6 +46,16 @@ func Invite(
 	}
 	event := inviteReq.Event()
 
+	// Check if we support the room version for the invite.
+	if roomVersion, err := version.SupportedRoomVersion(inviteReq.RoomVersion()); err != nil {
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.UnsupportedRoomVersion(
+				fmt.Sprintf("Users of %q cannot join version %q rooms.", cfg.Matrix.ServerName, roomVersion),
+			),
+		}
+	}
+
 	// Check that the room ID is correct.
 	if event.RoomID() != roomID {
 		return util.JSONResponse{