diff --git a/pkgs/development/python-modules/py/default.nix b/pkgs/development/python-modules/py/default.nix
index aa12deabb37e..8c38723207a7 100644
--- a/pkgs/development/python-modules/py/default.nix
+++ b/pkgs/development/python-modules/py/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "py";
-  version = "1.9.0";
+  version = "1.10.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "9ca6883ce56b4e8da7e79ac18787889fa5206c79dcc67fb065376cd2fe03f342";
+    sha256 = "21b81bda15b66ef5e1a777a21c4dcd9c20ad3efd0b3f817e7a809035269e1bd3";
   };
 
   # Circular dependency on pytest