diff --git a/src/Control/Concurrent/Supervisor/Types.hs b/src/Control/Concurrent/Supervisor/Types.hs
--- a/src/Control/Concurrent/Supervisor/Types.hs
+++ b/src/Control/Concurrent/Supervisor/Types.hs
@@ -13,6 +13,7 @@
 module Control.Concurrent.Supervisor.Types
   ( SupervisorSpec0
   , Supervisor0
+  , QueueLike(..)
   , Child_
   , DeadLetter
   , RestartAction
diff --git a/threads-supervisor.cabal b/threads-supervisor.cabal
--- a/threads-supervisor.cabal
+++ b/threads-supervisor.cabal
@@ -1,5 +1,5 @@
 name:                threads-supervisor
-version:             1.0.4.0
+version:             1.0.4.1
 synopsis:            Simple, IO-based library for Erlang-style thread supervision
 description:         Simple, IO-based library for Erlang-style thread supervision
 license:             MIT