diff --git a/pkg/pkg.ml b/pkg/pkg.ml
new file mode 100644
index 0000000..1a04c2b
--- /dev/null
+++ b/pkg/pkg.ml
@@ -0,0 +1,2 @@
+#use "topfind"
+#require "topkg-jbuilder.auto"
diff --git a/src/lib/jbuild b/src/lib/jbuild
index 8bc1f48..a2d849b 100644
--- a/src/lib/jbuild
+++ b/src/lib/jbuild
@@ -1,22 +1,3 @@
-(* -*- tuareg -*- *)
-
-module J = Jbuild_plugin.V1
-
-let version =
-  let ic = open_in_bin "../../utop.opam" in
-  let rec loop ic =
-    let line = input_line ic in
-    try
-      Scanf.sscanf line "version: %S" (fun x -> x)
-    with _ ->
-      loop ic
-  in
-  let v = loop ic in
-  close_in ic;
-  v
-
-let () =
-  Printf.ksprintf J.send {|
 (jbuild_version 1)
 
 (library
@@ -24,12 +5,7 @@ let () =
   (public_name utop)
   (wrapped false)
   (modes (byte))
-  (libraries (compiler-libs.toplevel findlib_top lambda-term threads))
+  (libraries (compiler-libs.toplevel findlib.top lambda-term threads))
   (preprocess (action (run ${bin:cppo} -V OCAML:${ocaml_version} ${<})))))
 
 (ocamllex (uTop_lexer))
-
-(rule
- ((targets (uTop_version.ml))
-  (action  (with-stdout-to ${@} (echo "let version = \"%s\"")))))
-|} version
diff --git a/src/lib/uTop.ml b/src/lib/uTop.ml
index 4f8729e..0af8603 100644
--- a/src/lib/uTop.ml
+++ b/src/lib/uTop.ml
@@ -17,7 +17,7 @@ let (>>=) = Lwt.(>>=)
 
 module String_set = Set.Make(String)
 
-let version = UTop_version.version
+let version = "%%VERSION%%"
 
 (* +-----------------------------------------------------------------+
    | History                                                         |
diff --git a/utop.opam b/utop.opam
index e3eb99d..5171020 100644
--- a/utop.opam
+++ b/utop.opam
@@ -1,5 +1,4 @@
 opam-version: "1.2"
-version: "1.20"
 maintainer: "jeremie@dimino.org"
 authors: ["Jérémie Dimino"]
 license: "BSD3"
@@ -7,6 +6,7 @@ homepage: "https://github.com/diml/utop"
 bug-reports: "https://github.com/diml/utop/issues"
 dev-repo: "git://github.com/diml/utop.git"
 build: [
+  ["jbuilder" "subst"] {pinned}
   ["jbuilder" "build" "-p" name "-j" jobs]
 ]
 depends: [
@@ -17,8 +17,8 @@ depends: [
   "lwt"
   "react"        {>= "1.0.0"}
   "cppo"         {build & >= "1.1.2"}
-  "findlib_top"
-  "jbuilder"     {build & >= "1.0+beta7"}
+  "findlib.top"  {>= "1.7.2"}
+  "jbuilder"     {build & >= "1.0+beta9"}
 ]
 depopts: [
   "ppx_tools"