diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 730ba51a3a80091dcc62c2108175ff4cb1d234b0..b31bc66548595914638e643895d827a3ccea258f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,6 +3,8 @@ image: ocaml/opam:ubuntu
 variables:
   GIT_STRATEGY: clone
 
+before_script:
+  opam install camlp4
 
 stages:
   - build
diff --git a/_oasis b/_oasis
index eaabdb2623eb8c6184bc5aa65935666fc9676b4d..cb6907539b7b7a4260dc240261e399b5ac7bca96 100644
--- a/_oasis
+++ b/_oasis
@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        lutils
-Version:     1.22
+Version:     1.23
 Authors:     Erwan Jahier
 Maintainers: erwan.jahier@imag.fr
 License:     GPL-3
diff --git a/doc/version.tex b/doc/version.tex
index 89b7a9774a841018717bab9304afa53f0ef3f607..00284eec9580c9c049676b98f06fa7757eeb2f59 100644
--- a/doc/version.tex
+++ b/doc/version.tex
@@ -1,4 +1,4 @@
-\newcommand{\version}{1.22}
-\newcommand{\sha}{943470a}
+\newcommand{\version}{1.23}
+\newcommand{\sha}{8b7a7de}
 \newcommand{\versionname}{none}
 \newcommand{\versiondate}{08-12-17}
diff --git a/setup.ml b/setup.ml
index 0a45e20129cf453b4b082063540e2279d3043473..a8845f7d3b5608b51fa9020152c08ef105ffb49c 100644
--- a/setup.ml
+++ b/setup.ml
@@ -1,7 +1,7 @@
 (* setup.ml generated for the first time by OASIS v0.4.10 *)
 
 (* OASIS_START *)
-(* DO NOT EDIT (digest: c3931a0407d5bf5bbfe984ac8903f4a6) *)
+(* DO NOT EDIT (digest: 65884de33b0e5272f670d6f66f7be6c4) *)
 (*
    Regenerated by OASIS v0.4.10
    Visit http://oasis.forge.ocamlcore.org for more information and
@@ -6855,7 +6855,7 @@ let setup_t =
        {
           oasis_version = "0.4";
           ocaml_version = None;
-          version = "1.22";
+          version = "1.23";
           license =
             OASISLicense.DEP5License
               (OASISLicense.DEP5Unit
@@ -7254,8 +7254,7 @@ let setup_t =
        };
      oasis_fn = Some "_oasis";
      oasis_version = "0.4.10";
-     oasis_digest =
-       Some "\240\246\152\175\150\242I\017?k4\160\171\163\219\133";
+     oasis_digest = Some "\192Uf\185\248\001\178'\150\005`\132>\011~.";
      oasis_exec = None;
      oasis_setup_args = [];
      setup_update = false
@@ -7263,7 +7262,7 @@ let setup_t =
 
 let setup () = BaseSetup.setup setup_t;;
 
-# 7267 "setup.ml"
+# 7266 "setup.ml"
 let setup_t = BaseCompat.Compat_0_4.adapt_setup_t setup_t
 open BaseCompat.Compat_0_4
 (* OASIS_STOP *)
diff --git a/src/META b/src/META
index 6afd54dc008cd10fff7dfa3f581da7e42c29200e..8f971ddfdc868fca8b8748dd52dd6b59dc8653b5 100644
--- a/src/META
+++ b/src/META
@@ -1,6 +1,6 @@
 # OASIS_START
-# DO NOT EDIT (digest: 8e03da8e91e95d09b4227d20939ab65a)
-version = "1.22"
+# DO NOT EDIT (digest: 7beeecc388a5c11e700851d431d711f5)
+version = "1.23"
 description = "shared by Verimag/synchronous tools (lustre, lutin, rdbg)."
 requires = "unix str camlp4 num"
 archive(byte) = "lutils.cma"
diff --git a/src/lutilsVersion.ml b/src/lutilsVersion.ml
index 47ae2d21b13579035ef6ce4bba64b364040fb380..97b914c3da61b969b6cad76aafc7d77a46500d8f 100644
--- a/src/lutilsVersion.ml
+++ b/src/lutilsVersion.ml
@@ -1,2 +1,2 @@
-let str="1.22"
-let sha="943470a"
+let str="1.23"
+let sha="8b7a7de"