diff --git a/pkgs/development/ocaml-modules/bitv/default.nix b/pkgs/development/ocaml-modules/bitv/default.nix
index 23e8d145a308..2ac3a0ba3e76 100644
--- a/pkgs/development/ocaml-modules/bitv/default.nix
+++ b/pkgs/development/ocaml-modules/bitv/default.nix
@@ -1,16 +1,18 @@
-{ stdenv, lib, fetchzip, autoreconfHook, which, ocaml, findlib }:
+{ stdenv, lib, fetchFromGitHub, autoreconfHook, which, ocaml, findlib }:
 
 if !lib.versionAtLeast ocaml.version "4.02"
 then throw "bitv is not available for OCaml ${ocaml.version}"
 else
 
 stdenv.mkDerivation rec {
-  name = "ocaml${ocaml.version}-bitv-${version}";
+  pname = "ocaml${ocaml.version}-bitv";
   version = "1.3";
 
-  src = fetchzip {
-    url = "https://github.com/backtracking/bitv/archive/${version}.tar.gz";
-    sha256 = "0vkh1w9fpi5m1sgiqg6r38j3fqglhdajmbyiyr91113lrpljm75i";
+  src = fetchFromGitHub {
+    owner = "backtracking";
+    repo = "bitv";
+    rev = version;
+    sha256 = "sha256-sZwq6c10hBBS9tGvKlWD9GE3JBrZPByfDrXE6xIPcG4=";
   };
 
   buildInputs = [ autoreconfHook which ocaml findlib ];