diff --git a/pkgs/development/tools/ocaml/dune/default.nix b/pkgs/development/tools/ocaml/dune/default.nix
index 85fa76bb28e49..fbc76b2902e77 100644
--- a/pkgs/development/tools/ocaml/dune/default.nix
+++ b/pkgs/development/tools/ocaml/dune/default.nix
@@ -2,10 +2,10 @@
 
 stdenv.mkDerivation rec {
   name = "dune-${version}";
-  version = "1.6.2";
+  version = "1.7.3";
   src = fetchurl {
     url = "https://github.com/ocaml/dune/releases/download/${version}/dune-${version}.tbz";
-    sha256 = "1k675mfywmsj4v4z2f5a4vqinl1jbzzb7v5k6rzyfgvxzd7gil40";
+    sha256 = "0g08js93qkf4b7ibrzlxs73qrdglwy4c0z5gbs6xh710ja41f6l4";
   };
 
   buildInputs = with ocamlPackages; [ ocaml findlib ];