diff --git a/pkgs/development/ocaml-modules/stringext/default.nix b/pkgs/development/ocaml-modules/stringext/default.nix
index dde2b0ebe45c..dae947035d25 100644
--- a/pkgs/development/ocaml-modules/stringext/default.nix
+++ b/pkgs/development/ocaml-modules/stringext/default.nix
@@ -1,14 +1,13 @@
-{ stdenv, fetchgit, ocaml, findlib }:
+{ stdenv, fetchzip, ocaml, findlib }:
 
-let version = "1.2.0"; in
+let version = "1.3.0"; in
 
 stdenv.mkDerivation {
   name = "ocaml-stringext-${version}";
 
-  src = fetchgit {
-    url = https://github.com/rgrinberg/stringext.git;
-    rev = "refs/tags/v${version}";
-    sha256 = "04ixh33225n2fyc0i35pk7h9shxfdg9grhvkxy086zppki3a3vc6";
+  src = fetchzip {
+    url = "https://github.com/rgrinberg/stringext/archive/v${version}.tar.gz";
+    sha256 = "0sd1chyxclmip0nxqhasp1ri91bwxr8nszkkr5kpja45f6bav6k9";
   };
 
   buildInputs = [ ocaml findlib ];