diff --git a/pkgs/development/ocaml-modules/fdkaac/default.nix b/pkgs/development/ocaml-modules/fdkaac/default.nix
index d794e4acce79..f31a94e2c7d6 100644
--- a/pkgs/development/ocaml-modules/fdkaac/default.nix
+++ b/pkgs/development/ocaml-modules/fdkaac/default.nix
@@ -4,16 +4,14 @@
 
 buildDunePackage rec {
   pname = "fdkaac";
-  version = "0.3.2";
+  version = "0.3.3";
   src = fetchFromGitHub {
     owner = "savonet";
     repo = "ocaml-fdkaac";
-    rev = version;
-    sha256 = "10i6hsjkrpw7zgx99zvvka3sapd7zy53k7z4b6khj9rdrbrgznv8";
+    rev = "v${version}";
+    hash = "sha256-cTPPQKBq0EFo35eK7TXlszbodHYIg1g7v+yQ/rG7Y9I=";
   };
 
-  useDune2 = true;
-
   buildInputs = [ dune-configurator ];
   propagatedBuildInputs = [ fdk_aac ];