diff --git a/pkgs/development/ocaml-modules/ipaddr/2.6.1.nix b/pkgs/development/ocaml-modules/ipaddr/2.6.1.nix
deleted file mode 100644
index a602393e920..00000000000
--- a/pkgs/development/ocaml-modules/ipaddr/2.6.1.nix
+++ /dev/null
@@ -1,32 +0,0 @@
-{stdenv, buildOcaml, fetchurl, sexplib_p4}:
-
-buildOcaml rec {
-  name = "ipaddr";
-  version = "2.6.1";
-
-  src = fetchurl {
-    url = "https://github.com/mirage/ocaml-ipaddr/archive/${version}.tar.gz";
-    sha256 = "7051013d8f58abff433187d70cd7ddd7a6b49a6fbe6cad1893f571f65b8ed3d0";
-  };
-
-  propagatedBuildInputs = [ sexplib_p4 ];
-
-  configurePhase = ''
-   ocaml setup.ml -configure --prefix $out
-  '';
-
-  buildPhase =  ''
-  make build
-  '';
-
-  installPhase =  ''
-  make install
-  '';
-
-  meta = with stdenv.lib; {
-    homepage = "https://github.com/mirage/ocaml-ipaddr";
-    description = "A library for manipulation of IP (and MAC) address representations ";
-    license = licenses.mit;
-    maintainers = [ maintainers.ericbmerritt ];
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index f21f3ca9cbe..80d49ca1f58 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -317,12 +317,7 @@ let
 
     io-page = callPackage ../development/ocaml-modules/io-page { };
 
-    ipaddr_p4 = callPackage ../development/ocaml-modules/ipaddr/2.6.1.nix { };
-
-    ipaddr =
-      if lib.versionOlder "4.02" ocaml.version
-      then callPackage ../development/ocaml-modules/ipaddr { }
-      else ipaddr_p4;
+    ipaddr = callPackage ../development/ocaml-modules/ipaddr { };
 
     irmin_1 = callPackage ../development/ocaml-modules/irmin/1.4.nix { };