diff --git a/openrpc-client.asd b/openrpc-client.asd
index 573bb1f..b38e3e1 100644
--- a/openrpc-client.asd
+++ b/openrpc-client.asd
@@ -6,7 +6,8 @@
   :defsystem-depends-on ("40ants-asdf-system")
   :pathname "client"
   :serial t
-  :depends-on ("openrpc-client/client")
+  :depends-on ("jsonrpc"
+               "openrpc-client/client")
   :description "OpenRPC client implementation for Common Lisp."
   :homepage "https://40ants.com/openrpc/"
   :source-control (:git "https://github.com/40ants/openrpc")