diff --git a/pkgs/development/ocaml-modules/pa_ounit/default.nix b/pkgs/development/ocaml-modules/pa_ounit/default.nix
index 5970aba1e50..fa4ecfcc28b 100644
--- a/pkgs/development/ocaml-modules/pa_ounit/default.nix
+++ b/pkgs/development/ocaml-modules/pa_ounit/default.nix
@@ -2,11 +2,11 @@
 
 buildOcaml rec {
   name = "pa_ounit";
-  version = "112.24.00";
+  version = "113.00.00";
 
   src = fetchurl {
     url = "https://github.com/janestreet/pa_ounit/archive/${version}.tar.gz";
-    sha256 = "fa04e72fe1db41e6dc64f9707cf5705cb9b957aa93265120c875c808eb9b9b96";
+    sha256 = "0vi0p2hxcrdsl0319c9s8mh9hmk2i4ir6c6vrj8axkc37zkgc437";
   };
 
   propagatedBuildInputs = [ ounit ];