diff --git a/pkgs/development/python-modules/blockdiag/default.nix b/pkgs/development/python-modules/blockdiag/default.nix
index b1a7dc98b57d..8b43fd2c9065 100644
--- a/pkgs/development/python-modules/blockdiag/default.nix
+++ b/pkgs/development/python-modules/blockdiag/default.nix
@@ -7,7 +7,7 @@
   fetchpatch,
   funcparserlib,
   pillow,
-  pynose,
+  nose,
   pytestCheckHook,
   pythonOlder,
   reportlab,
@@ -48,9 +48,12 @@ buildPythonPackage rec {
     webcolors
   ];
 
+  # tests rely on nose
+  doCheck = pythonOlder "3.12";
+
   nativeCheckInputs = [
     ephem
-    pynose
+    nose
     pytestCheckHook
   ];