diff --git a/pkgs/development/libraries/json-fortran/default.nix b/pkgs/development/libraries/json-fortran/default.nix
index de1909fae444..52ec487c0636 100644
--- a/pkgs/development/libraries/json-fortran/default.nix
+++ b/pkgs/development/libraries/json-fortran/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "json-fortran";
-  version = "8.5.2";
+  version = "9.0.1";
 
   src = fetchFromGitHub {
     owner = "jacobwilliams";
     repo = pname;
     rev = version;
-    hash = "sha256-ja/MIqAe4V5nasdtWThkRxNWCx4+twz7/dX4+8X+Bt8=";
+    hash = "sha256-nhT2zLyt3ORi35h9KzOiIuD50GGUCZ/Z5SX8UF3rqQs=";
   };
 
   nativeBuildInputs = [