diff --git a/arrayjit.opam b/arrayjit.opam
index 0cae3178..435737f8 100644
--- a/arrayjit.opam
+++ b/arrayjit.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "0.4.1~beta2"
+version: "0.4.1"
 synopsis:
   "An array language compiler with multiple backends (CPU, CUDA), staged compilation"
 description:
diff --git a/dune-project b/dune-project
index 5563dee3..222ef31b 100644
--- a/dune-project
+++ b/dune-project
@@ -4,7 +4,7 @@
 
 (name ocannl)
 
-(version 0.4.1~beta2)
+(version 0.4.1)
 
 (generate_opam_files true)
 
diff --git a/neural_nets_lib.opam b/neural_nets_lib.opam
index d166a4b5..59123484 100644
--- a/neural_nets_lib.opam
+++ b/neural_nets_lib.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "0.4.1~beta2"
+version: "0.4.1"
 synopsis:
   "A from-scratch Deep Learning framework with an optimizing compiler, shape inference, concise syntax"
 description:
diff --git a/ocannl_npy.opam b/ocannl_npy.opam
index 9abce83e..5b1acf98 100644
--- a/ocannl_npy.opam
+++ b/ocannl_npy.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "0.4.1~beta2"
+version: "0.4.1"
 synopsis: "Numpy file format support for ocaml"
 maintainer: ["Lukasz Stafiniak <lukstafi@gmail.com>"]
 authors: ["Laurent Mazare"]