diff --git a/pkgs/development/ocaml-modules/sha/default.nix b/pkgs/development/ocaml-modules/sha/default.nix
index 4d400d32844a..bdf3b16c4a91 100644
--- a/pkgs/development/ocaml-modules/sha/default.nix
+++ b/pkgs/development/ocaml-modules/sha/default.nix
@@ -2,12 +2,12 @@
 
 buildDunePackage rec {
   pname = "sha";
-  version = "1.15.2";
+  version = "1.15.4";
   duneVersion = "3";
 
   src = fetchurl {
-    url = "https://github.com/djs55/ocaml-${pname}/releases/download/${version}/${pname}-${version}.tbz";
-    hash = "sha256-P71Xs5p8QAaOtBrh7MuhQJOL6144BqTLvXlZOyGD/7c=";
+    url = "https://github.com/djs55/ocaml-${pname}/releases/download/v${version}/${pname}-${version}.tbz";
+    hash = "sha256-beWxITmxmZzp30zHiloxiGwqVHydRIvyhT+LU7zx8bE=";
   };
 
   propagatedBuildInputs = [