diff --git a/pkgs/development/python-modules/arcam-fmj/default.nix b/pkgs/development/python-modules/arcam-fmj/default.nix
index a1f4892a245f..3c7053c11a07 100644
--- a/pkgs/development/python-modules/arcam-fmj/default.nix
+++ b/pkgs/development/python-modules/arcam-fmj/default.nix
@@ -12,15 +12,15 @@
 
 buildPythonPackage rec {
   pname = "arcam-fmj";
-  version = "0.12.0";
+  version = "1.0.1";
 
   disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "elupus";
     repo = "arcam_fmj";
-    rev = version;
-    sha256 = "sha256-YkoABsOLEl1gSCRgZr0lLZGzicr3N5KRNLDjfuQhy2U=";
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-Lmz701qdqFlXro279AdNx+P1o3Q/Om63jKvy854ogto=";
   };
 
   propagatedBuildInputs = [