diff --git a/pkgs/development/python-modules/pylibftdi/default.nix b/pkgs/development/python-modules/pylibftdi/default.nix
index d4dd2d6781be..32f20e278754 100644
--- a/pkgs/development/python-modules/pylibftdi/default.nix
+++ b/pkgs/development/python-modules/pylibftdi/default.nix
@@ -8,14 +8,14 @@
 
 buildPythonPackage rec {
   pname = "pylibftdi";
-  version = "0.20.0";
+  version = "0.21.0";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "f4a87fc4af2c9c7d42badd4192ca9b529f32c9d96fdc8daea7e29c509226df5f";
+    hash = "sha256-634vUFKFJUf0xsRgIqFmX510U0OWORcereVv3ICliDI=";
   };
 
   propagatedBuildInputs = [
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   ];
 
   postPatch = ''
-    substituteInPlace pylibftdi/driver.py \
+    substituteInPlace src/pylibftdi/driver.py \
       --replace "self._load_library('libusb')" "cdll.LoadLibrary('${libusb1.out}/lib/libusb-1.0.so')" \
       --replace "self._load_library('libftdi')" "cdll.LoadLibrary('${libftdi1.out}/lib/libftdi1.so')"
   '';
@@ -34,8 +34,9 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    homepage = "https://pylibftdi.readthedocs.io/";
     description = "Wrapper to Intra2net's libftdi driver for FTDI's USB devices";
+    homepage = "https://pylibftdi.readthedocs.io/";
+    changelog = "https://github.com/codedstructure/pylibftdi/blob/${version}0/CHANGES.txt";
     license = licenses.mit;
     maintainers = with maintainers; [ matthuszagh ];
   };