diff --git a/pkgs/development/python-modules/exchangelib/default.nix b/pkgs/development/python-modules/exchangelib/default.nix
index bf9ae2284f7d..c41b04790836 100644
--- a/pkgs/development/python-modules/exchangelib/default.nix
+++ b/pkgs/development/python-modules/exchangelib/default.nix
@@ -9,7 +9,7 @@
 
 buildPythonPackage rec {
   pname = "exchangelib";
-  version = "4.1.0";
+  version = "4.4.0";
   disabled = pythonOlder "3.5";
 
   # tests are not present in the PyPI version
@@ -17,7 +17,7 @@ buildPythonPackage rec {
     owner = "ecederstrand";
     repo = pname;
     rev = "v${version}";
-    sha256 = "0lkhjiz78x00d5gzn455660f31f8y4fcrqcn6rh0m41r1ar5im17";
+    sha256 = "0d6hfbawp68x18ryxamkamf8kgc55xbrll89g3swrqnm2rrhzrqf";
   };
 
   checkInputs = [ psutil requests-mock pyyaml