diff --git a/pkgs/development/python-modules/scikit-hep-testdata/default.nix b/pkgs/development/python-modules/scikit-hep-testdata/default.nix
index 94531f8a2213..1d448c0b45de 100644
--- a/pkgs/development/python-modules/scikit-hep-testdata/default.nix
+++ b/pkgs/development/python-modules/scikit-hep-testdata/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "scikit-hep-testdata";
-  version = "0.4.39";
+  version = "0.4.40";
   format = "pyproject";
 
   disabled = pythonOlder "3.6";
@@ -20,7 +20,7 @@ buildPythonPackage rec {
     owner = "scikit-hep";
     repo = pname;
     rev = "refs/tags/v${version}";
-    hash = "sha256-tcKEJrqB7cblcmH4PtSmx0heUew2+aDE4+mk2v9cUuo=";
+    hash = "sha256-6PUAam7eDWQOMS3SVIVJXvqQLBE187yUbkiyFZ+ojcU=";
   };
 
   nativeBuildInputs = [