diff --git a/pkgs/development/ocaml-modules/cmdliner/1_0.nix b/pkgs/development/ocaml-modules/cmdliner/1_0.nix
index ed96b1b6155..718c6b95a06 100644
--- a/pkgs/development/ocaml-modules/cmdliner/1_0.nix
+++ b/pkgs/development/ocaml-modules/cmdliner/1_0.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     homepage = "https://erratique.ch/software/cmdliner";
     description = "An OCaml module for the declarative definition of command line interfaces";
-    license = licenses.bsd3;
+    license = licenses.isc;
     inherit (ocaml.meta) platforms;
     maintainers = [ maintainers.vbgl ];
   };