diff --git a/pkgs/development/python-modules/versioneer/default.nix b/pkgs/development/python-modules/versioneer/default.nix
index 5336420c79af..868ad5fed966 100644
--- a/pkgs/development/python-modules/versioneer/default.nix
+++ b/pkgs/development/python-modules/versioneer/default.nix
@@ -6,12 +6,12 @@
 
 buildPythonPackage rec {
   pname = "versioneer";
-  version = "0.20";
+  version = "0.21";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-Ljk2AOwnF7efWcmE942TX3bkbEyu+HWoe4tO1gLy/2U=";
+    sha256 = "64f2dbcbbed15f9a6da2b85f643997db729cf496cafdb97670fb2fa73a7d8e20";
   };
 
   # Couldn't get tests to work because, for instance, they used virtualenv and