diff --git a/pkgs/development/ocaml-modules/owl-base/default.nix b/pkgs/development/ocaml-modules/owl-base/default.nix
index 2c9eb60a1893..3efb1bf546a1 100644
--- a/pkgs/development/ocaml-modules/owl-base/default.nix
+++ b/pkgs/development/ocaml-modules/owl-base/default.nix
@@ -6,13 +6,13 @@
 
 buildDunePackage rec {
   pname = "owl-base";
-  version = "1.1";
+  version = "1.2";
 
   duneVersion = "3";
 
   src = fetchurl {
     url = "https://github.com/owlbarn/owl/releases/download/${version}/owl-${version}.tbz";
-    hash = "sha256-mDYCZ2z33VTEvc6gV4JTecIXA/vHIWuU37BADGl/yog=";
+    hash = "sha256-OBei5DkZIsiiIltOM8qV2mgJJGmU5r8pGjAMgtjKxsU=";
   };
 
   minimalOCamlVersion = "4.10";