diff --git a/pkgs/development/python-modules/cftime/default.nix b/pkgs/development/python-modules/cftime/default.nix
index b827c48531aa..4291f805d2c0 100644
--- a/pkgs/development/python-modules/cftime/default.nix
+++ b/pkgs/development/python-modules/cftime/default.nix
@@ -2,7 +2,6 @@
 , buildPythonPackage
 , cython
 , fetchPypi
-, fetchpatch
 , numpy
 , pytestCheckHook
 , pythonOlder
@@ -10,29 +9,20 @@
 
 buildPythonPackage rec {
   pname = "cftime";
-  version = "1.6.2";
+  version = "1.6.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-hhTAD7ilBG3jBP3Ybb0iT5lAgYXXskWsZijQJ2WW5tI=";
+    hash = "sha256-0Kayn3KhPwjgCLm+z/JHzHXISsshMzLt4Yh5xbaqTf0=";
   };
 
-  patches = [
-    (fetchpatch {
-      # Fix test_num2date_precision by checking per platform precision
-      url = "https://github.com/Unidata/cftime/commit/221ff2195d588a43a7984597033b678f330fbc41.patch";
-      hash = "sha256-3XTJuET20g9QElM/8WGnNzJBFZ0oUN4ikhWKppwcyNM=";
-    })
-  ];
-
   postPatch = ''
     sed -i "/--cov/d" setup.cfg
   '';
 
-
   nativeBuildInputs = [
     cython
     numpy