diff --git a/pkgs/development/ocaml-modules/mdx/default.nix b/pkgs/development/ocaml-modules/mdx/default.nix
index c839019554fc..c639885a7fab 100644
--- a/pkgs/development/ocaml-modules/mdx/default.nix
+++ b/pkgs/development/ocaml-modules/mdx/default.nix
@@ -22,11 +22,11 @@
 
 buildDunePackage (finalAttrs: {
   pname = "mdx";
-  version = "2.5.1";
+  version = "2.5.2";
 
   src = fetchurl {
     url = "https://github.com/realworldocaml/mdx/releases/download/${finalAttrs.version}/mdx-${finalAttrs.version}.tbz";
-    hash = "sha256-3YKYDdERpIBv+akdnS7Xwmrvsdp9zL0V5zw6j2boY/U=";
+    hash = "sha256-yEjCxoDGJmLcSgX1WOXGwY7Sqre7ZQjB1JEJ1uqRo88=";
   };
 
   env =