diff --git a/pkgs/development/python-modules/pytest-helpers-namespace/default.nix b/pkgs/development/python-modules/pytest-helpers-namespace/default.nix
index eac8cf6377d1..f7d6ce312640 100644
--- a/pkgs/development/python-modules/pytest-helpers-namespace/default.nix
+++ b/pkgs/development/python-modules/pytest-helpers-namespace/default.nix
@@ -10,12 +10,12 @@
 
 buildPythonPackage rec {
   pname = "pytest-helpers-namespace";
-  version = "2021.4.29";
+  version = "2021.12.29";
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "183524e3db4e2a1fea92e0ca3662a624ba44c9f3568da15679d7535ba6838a6a";
+    sha256 = "792038247e0021beb966a7ea6e3a70ff5fcfba77eb72c6ec8fd6287af871c35b";
   };
 
   nativeBuildInputs = [ setuptools setuptools-declarative-requirements setuptools-scm ];