diff --git a/backplane-server.asd b/backplane-server.asd
index 1c2085e..dce61f9 100644
--- a/backplane-server.asd
+++ b/backplane-server.asd
@@ -20,7 +20,8 @@
   :depends-on (:arrows
                :backplane-server
                :cl-json
-               :prove)
+               :prove
+               :prove-asdf)
   :defsystem-depends-on (:prove-asdf)
   :components ((:module "test"
                 :serial t