diff --git a/servant-server/servant-server.cabal b/servant-server/servant-server.cabal
index ff84d947..d055df2f 100644
--- a/servant-server/servant-server.cabal
+++ b/servant-server/servant-server.cabal
@@ -99,6 +99,7 @@ test-suite spec
   hs-source-dirs: test
   main-is: Spec.hs
   other-modules:
+      Servant.ArbitraryMonadServerSpec
       Servant.Server.ErrorSpec
       Servant.Server.Internal.ContextSpec
       Servant.Server.RouterSpec