diff --git a/pkgs/development/ocaml-modules/odoc-parser/default.nix b/pkgs/development/ocaml-modules/odoc-parser/default.nix
index 1e23649ac3b2..cac3a548369f 100644
--- a/pkgs/development/ocaml-modules/odoc-parser/default.nix
+++ b/pkgs/development/ocaml-modules/odoc-parser/default.nix
@@ -6,12 +6,15 @@
   astring,
   result,
   camlp-streams,
-  version ? if lib.versionAtLeast ocaml.version "4.08" then "3.1.0" else "2.4.4",
+  version ? "3.2.1",
 }:
 
 let
   param =
     {
+      "3.2.1" = {
+        sha256 = "sha256-1F6xJVFIOf2awncCu0k40bTztpeOmxarlnPqBnJFr/w=";
+      };
       "3.1.0" = {
         sha256 = "sha256-NVs8//STSQPLrti1HONeMz6GCZMtIwKUIAqfLUL/qRQ=";
       };