diff --git a/pkgs/development/python-modules/urwidtrees/default.nix b/pkgs/development/python-modules/urwidtrees/default.nix
index 1b5c58b9ca5..c441d93f6f7 100644
--- a/pkgs/development/python-modules/urwidtrees/default.nix
+++ b/pkgs/development/python-modules/urwidtrees/default.nix
@@ -3,21 +3,29 @@
 , fetchFromGitHub
 , glibcLocales
 , urwid
+, fetchpatch
 }:
 
 buildPythonPackage rec {
   pname = "urwidtrees";
-  version  = "1.0.2";
+  version  = "1.0.3";
 
   src = fetchFromGitHub {
     owner = "pazz";
     repo = "urwidtrees";
     rev = version;
-    sha256 = "1n1kpidvkdnsqyb82vlvk78gmly96kh8351lqxn2pzgwwns6fml2";
+    sha256 = "sha256-yGSjwagCd5TiwEFtF6ZhDuVqj4PTa5pVXhs8ebr2O/g=";
   };
 
   propagatedBuildInputs = [ urwid ];
 
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/pazz/urwidtrees/commit/ed39dbc4fc67b0e0249bf108116a88cd18543aa9.patch";
+    sha256 = "sha256-fA+30d2uVaoNCg4rtoWLNPvrZtq41Co4vcmM80hkURs=";
+    })
+  ];
+
   checkInputs = [ glibcLocales ];
   LC_ALL="en_US.UTF-8";