diff --git a/pkgs/development/ocaml-modules/xmlm/default.nix b/pkgs/development/ocaml-modules/xmlm/default.nix
index 9396dd7b9144..82d64566b9a6 100644
--- a/pkgs/development/ocaml-modules/xmlm/default.nix
+++ b/pkgs/development/ocaml-modules/xmlm/default.nix
@@ -4,17 +4,17 @@ let
   webpage = "https://erratique.ch/software/${pname}";
 in
 
-if lib.versionOlder ocaml.version "4.02"
+if lib.versionOlder ocaml.version "4.05"
 then throw "xmlm is not available for OCaml ${ocaml.version}"
 else
 
 stdenv.mkDerivation rec {
   name = "ocaml${ocaml.version}-${pname}-${version}";
-  version = "1.3.0";
+  version = "1.4.0";
 
   src = fetchurl {
     url = "${webpage}/releases/${pname}-${version}.tbz";
-    sha256 = "1rrdxg5kh9zaqmgapy9bhdqyxbbvxxib3bdfg1vhw4rrkp1z0x8n";
+    sha256 = "sha256-CRJSJY490WMgw85N2yG81X79nIwuv7eZ7mpUPtSS2fo=";
   };
 
   nativeBuildInputs = [ ocaml findlib ocamlbuild topkg ];
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "An OCaml streaming codec to decode and encode the XML data format";
     homepage = webpage;
-    license = licenses.bsd3;
+    license = licenses.isc;
     maintainers = [ maintainers.vbgl ];
     mainProgram = "xmltrip";
     inherit (ocaml.meta) platforms;