diff --git a/pkgs/development/python-modules/ndspy/default.nix b/pkgs/development/python-modules/ndspy/default.nix
index 2a5ef941e1b3..e6539d7caecb 100644
--- a/pkgs/development/python-modules/ndspy/default.nix
+++ b/pkgs/development/python-modules/ndspy/default.nix
@@ -8,7 +8,7 @@
 
 buildPythonPackage rec {
   pname = "ndspy";
-  version = "4.1.0";
+  version = "4.2.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
@@ -16,8 +16,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "RoadrunnerWMC";
     repo = pname;
-    rev = "v${version}";
-    hash = "sha256-V7phRZCA0WbUpYLgS/4nJbje/JM61RksDUZQ2pnbQyU=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-PQONVEuh5Fg2LHr4gq0XTGcOpps/s9FSgoyDn4BCcik=";
   };
 
   nativeCheckInputs = [ pytestCheckHook ];