diff --git a/pkgs/development/python-modules/pytz/default.nix b/pkgs/development/python-modules/pytz/default.nix
index e7ce3b62b5b..8680a4f8e1d 100644
--- a/pkgs/development/python-modules/pytz/default.nix
+++ b/pkgs/development/python-modules/pytz/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "pytz";
-  version = "2019.3";
+  version = "2020.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "b02c06db6cf09c12dd25137e563b31700d3b80fcc4ad23abb7a315f2789819be";
+    sha256 = "c35965d010ce31b23eeb663ed3cc8c906275d6be1a34393a1d73a41febf4a048";
   };
 
   checkPhase = ''