diff --git a/pkgs/development/python-modules/pint/default.nix b/pkgs/development/python-modules/pint/default.nix
index d6806308e55..1bd5853ba72 100644
--- a/pkgs/development/python-modules/pint/default.nix
+++ b/pkgs/development/python-modules/pint/default.nix
@@ -5,11 +5,11 @@
 
 buildPythonPackage rec {
   pname = "pint";
-  version = "0.8.1";
+  version = "0.9";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "afcf31443a478c32bbac4b00337ee9026a13d0e2ac83d30c79151462513bb0d4";
+    sha256 = "32d8a9a9d63f4f81194c0014b3b742679dce81a26d45127d9810a68a561fe4e2";
   };
 
   meta = with stdenv.lib; {