diff --git a/pkgs/development/python-modules/arcam-fmj/default.nix b/pkgs/development/python-modules/arcam-fmj/default.nix
index 1169e1ca341f..7cba156bd684 100644
--- a/pkgs/development/python-modules/arcam-fmj/default.nix
+++ b/pkgs/development/python-modules/arcam-fmj/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "arcam-fmj";
-  version = "1.2.0";
+  version = "1.2.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.8";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "elupus";
     repo = "arcam_fmj";
     rev = "refs/tags/${version}";
-    hash = "sha256-stoxDb25K/h55rwR0faWO0AOjSJmjZNbMbOAuUE2iSM=";
+    hash = "sha256-nRInKju3Q4En+SiSl6DOeeTRK56TzKPweoVXsvzs45I=";
   };
 
   propagatedBuildInputs = [