diff --git a/pkgs/development/ocaml-modules/jsonm/default.nix b/pkgs/development/ocaml-modules/jsonm/default.nix
index f90a252264f..a6e136eddfc 100644
--- a/pkgs/development/ocaml-modules/jsonm/default.nix
+++ b/pkgs/development/ocaml-modules/jsonm/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "ocaml${ocaml.version}-jsonm";
-  version = "1.0.1";
+  version = "1.0.2";
 
   src = fetchurl {
     url = "https://erratique.ch/software/jsonm/releases/jsonm-${version}.tbz";
-    sha256 = "1176dcmxb11fnw49b7yysvkjh0kpzx4s48lmdn5psq9vshp5c29w";
+    hash = "sha256-6ikjn+tAUyAd8+Hm0nws4SOIKsRljhyL6plYvhGKe9Y=";
   };
 
   nativeBuildInputs = [ ocaml findlib ocamlbuild topkg ];