diff --git a/pkgs/development/ocaml-modules/bos/default.nix b/pkgs/development/ocaml-modules/bos/default.nix
index 9cc68872f68a..491408108f5d 100644
--- a/pkgs/development/ocaml-modules/bos/default.nix
+++ b/pkgs/development/ocaml-modules/bos/default.nix
@@ -15,11 +15,16 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "ocaml${ocaml.version}-bos";
-  version = "0.2.1";
+  version = if lib.versionAtLeast ocaml.version "4.14" then "0.3.0" else "0.2.1";
 
   src = fetchurl {
     url = "https://erratique.ch/software/bos/releases/bos-${finalAttrs.version}.tbz";
-    sha256 = "sha256-2NYueGsQ1pfgRXIFqO7eqifrzJDxhV8Y3xkMrC49jzc=";
+    hash =
+      {
+        "0.3.0" = "sha256-CJ82ntAJZ+kticxfzYSMVr2rXAJzfaTUg1UL9Wtaebw=";
+        "0.2.1" = "sha256-2NYueGsQ1pfgRXIFqO7eqifrzJDxhV8Y3xkMrC49jzc=";
+      }
+      ."${finalAttrs.version}";
   };
 
   nativeBuildInputs = [