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-rw-r--r--pkgs/development/ocaml-modules/csexp/default.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/ocaml-modules/csexp/default.nix b/pkgs/development/ocaml-modules/csexp/default.nix
index 0ca0943822287..26c064d6ff517 100644
--- a/pkgs/development/ocaml-modules/csexp/default.nix
+++ b/pkgs/development/ocaml-modules/csexp/default.nix
@@ -4,6 +4,8 @@ buildDunePackage rec {
   pname = "csexp";
   version = "1.3.2";
 
+  useDune2 = true;
+
   minimumOCamlVersion = "4.02.3";
 
   src = fetchurl {