diff --git a/pkgs/development/python-modules/xknx/default.nix b/pkgs/development/python-modules/xknx/default.nix
index b2bfeea8f7a9..6269c52c664b 100644
--- a/pkgs/development/python-modules/xknx/default.nix
+++ b/pkgs/development/python-modules/xknx/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchFromGitHub
+, cryptography
 , netifaces
 , voluptuous
 , pyyaml
@@ -11,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "xknx";
-  version = "0.19.2";
+  version = "0.20.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.8";
@@ -20,13 +21,12 @@ buildPythonPackage rec {
     owner = "XKNX";
     repo = pname;
     rev = version;
-    sha256 = "sha256-LJ7MmKCWx+n7caud0pN4+7f9H4XzwuAAn9u86X/FACo=";
+    sha256 = "sha256-7g1uAkBGlNcmfjqGNH2MS+X26Pq1hTKQy9eLJVTqxhA=";
   };
 
   propagatedBuildInputs = [
-    voluptuous
+    cryptography
     netifaces
-    pyyaml
   ];
 
   checkInputs = [