diff --git a/pkgs/development/ocaml-modules/ppx_tools/default.nix b/pkgs/development/ocaml-modules/ppx_tools/default.nix
index 2aa74d751db..a8fb4af2a6b 100644
--- a/pkgs/development/ocaml-modules/ppx_tools/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_tools/default.nix
@@ -20,6 +20,9 @@ let param = {
   "4.07" = {
     version = "5.1+4.06.0";
     sha256 = "1ww4cspdpgjjsgiv71s0im5yjkr3544x96wsq1vpdacq7dr7zwiw"; };
+  "4.08" = {
+    version = "5.3+4.08.0";
+    sha256 = "0vdmhs3hpmh5iclx4lzgdpf362m4l35zprxs73r84z1yhr4jcr4m"; };
 }."${ocaml.meta.branch}";
 in
   stdenv.mkDerivation {