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-rw-r--r--pkgs/development/ocaml-modules/ppx_import/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/ocaml-modules/ppx_import/default.nix b/pkgs/development/ocaml-modules/ppx_import/default.nix
index 120ce1893b2..8330aead80e 100644
--- a/pkgs/development/ocaml-modules/ppx_import/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_import/default.nix
@@ -26,6 +26,7 @@ buildDunePackage rec {
   inherit version;
 
   minimalOCamlVersion = "4.05";
+  duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/ocaml-ppx/ppx_import/releases/download/${version}/ppx_import-${version}.tbz";