diff --git a/src/core/dune b/src/core/dune
index d4ea6316..6e103f44 100644
--- a/src/core/dune
+++ b/src/core/dune
@@ -3,12 +3,12 @@
  (name moonpool)
  (libraries
   moonpool.private
-  thread-local-storage
+  (re_export thread-local-storage)
   moonpool.dpool
-  picos.exn_bt
-  picos)
+  (re_export picos.exn_bt)
+  (re_export picos))
  (flags :standard -open Moonpool_private)
- (private_modules types_ util_pool_)
+ (private_modules util_pool_)
  (preprocess
   (action
    (run %{project_root}/src/cpp/cpp.exe %{input-file}))))
diff --git a/src/core/moonpool.ml b/src/core/moonpool.ml
index cf91f3c3..47e5e5e3 100644
--- a/src/core/moonpool.ml
+++ b/src/core/moonpool.ml
@@ -39,6 +39,7 @@ module Private = struct
   module Worker_loop_ = Worker_loop_
   module Domain_ = Domain_
   module Tracing_ = Tracing_
+  module Types_ = Types_
 
   let num_domains = Domain_pool_.max_number_of_domains
 end
diff --git a/src/core/moonpool.mli b/src/core/moonpool.mli
index d4243491..9958efd3 100644
--- a/src/core/moonpool.mli
+++ b/src/core/moonpool.mli
@@ -221,6 +221,7 @@ module Private : sig
   (** Utils for domains *)
 
   module Tracing_ = Tracing_
+  module Types_ = Types_
 
   val num_domains : unit -> int
   (** Number of domains in the backing domain pool *)