diff --git a/dune b/dune
index 3ec7184..e1c3e8d 100644
--- a/dune
+++ b/dune
@@ -3,7 +3,7 @@
   (modules numpy py pyops pycaml pyml_arch pytypes pywrappers pyutils)
   (foreign_stubs (language c) (names numpy_stubs pyml_stubs))
   (wrapped false)
-  (libraries bigarray stdcompat))
+  (libraries unix bigarray stdcompat))
 
 (executables
   (names generate)
diff --git a/py.mli b/py.mli
index 1d5b817..d968dbf 100644
--- a/py.mli
+++ b/py.mli
@@ -723,16 +723,16 @@ module Dict: sig
   (** [to_bindings_string o] returns all the pairs [(key, value)] in the Python
       dictionary [o]. *)
 
-  val to_bindings_seq: Object.t -> (Object.t * Object.t) Seq.t
+  val to_bindings_seq: Object.t -> (Object.t * Object.t) Stdcompat.Seq.t
   (** [to_bindings_seq o] returns the ephemeral sequence of all the pairs
       (key, value) in the Python dictionary [o]. *)
 
   val to_bindings_seq_map: (Object.t -> 'a) -> (Object.t -> 'b) -> Object.t ->
-    ('a * 'b) Seq.t
+    ('a * 'b) Stdcompat.Seq.t
   (** [to_bindings_seq_map fkey fvalue o] returns the ephemeral sequence of all
       the pairs (fkey key, fvalue value) in the Python dictionary [o]. *)
 
-  val to_bindings_string_seq: Object.t -> (string * Object.t) Seq.t
+  val to_bindings_string_seq: Object.t -> (string * Object.t) Stdcompat.Seq.t
   (** [to_bindings_string_seq o] returns the ephemeral sequence of all the pairs
       (key, value) in the Python dictionary [o]. *)
 
diff --git a/pyml.opam b/pyml.opam
index 6315067..4aa5a21 100644
--- a/pyml.opam
+++ b/pyml.opam
@@ -32,4 +32,3 @@ build: [
   ]
 ]
 dev-repo: "git+https://github.com/thierry-martinez/pyml.git"
-version: "20220615"