diff --git a/pkgs/development/ocaml-modules/lwt-watcher/default.nix b/pkgs/development/ocaml-modules/lwt-watcher/default.nix
index 02bfc43abc5b..27a64c186efd 100644
--- a/pkgs/development/ocaml-modules/lwt-watcher/default.nix
+++ b/pkgs/development/ocaml-modules/lwt-watcher/default.nix
@@ -5,18 +5,16 @@
   lwt,
 }:
 
-buildDunePackage rec {
+buildDunePackage (finalAttrs: {
   pname = "lwt-watcher";
   version = "0.2";
   src = fetchFromGitLab {
     owner = "nomadic-labs";
-    repo = pname;
-    rev = "v${version}";
+    repo = "lwt-watcher";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-35Z73bSzEEgTabNH2cD9lRdDczsyIMZR2ktyKx4aN9k=";
   };
 
-  useDune2 = true;
-
   propagatedBuildInputs = [
     lwt
   ];
@@ -28,4 +26,4 @@ buildDunePackage rec {
     license = lib.licenses.mit;
     maintainers = [ lib.maintainers.ulrikstrid ];
   };
-}
+})