diff --git a/pkgs/by-name/ed/eduvpn-client/nix-python-prefix.patch b/pkgs/by-name/ed/eduvpn-client/nix-python-prefix.patch
deleted file mode 100644
index 4d5fc53b0993..000000000000
--- a/pkgs/by-name/ed/eduvpn-client/nix-python-prefix.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/eduvpn/utils.py b/eduvpn/utils.py
-index db0bf0c..76fc52a 100644
---- a/eduvpn/utils.py
-+++ b/eduvpn/utils.py
-@@ -69,7 +69,7 @@ def get_prefix() -> str:
-     """
-     target = "share/eduvpn/builder/mainwindow.ui"
-     local = path.dirname(path.dirname(path.abspath(__file__)))
--    options = [local, path.expanduser("~/.local"), "/usr/local", prefix]
-+    options = ["@out@"]
-     for option in options:
-         logger.debug(f"looking for '{target}' in '{option}'")
-         if path.isfile(path.join(option, target)):
diff --git a/pkgs/by-name/ed/eduvpn-client/package.nix b/pkgs/by-name/ed/eduvpn-client/package.nix
index 8a4fd7db89e8..3211636b8440 100644
--- a/pkgs/by-name/ed/eduvpn-client/package.nix
+++ b/pkgs/by-name/ed/eduvpn-client/package.nix
@@ -12,11 +12,12 @@
 
 python3Packages.buildPythonApplication rec {
   pname = "eduvpn-client";
-  version = "4.2.1";
+  version = "4.3.1";
+  format = "pyproject";
 
   src = fetchurl {
     url = "https://github.com/eduvpn/python-${pname}/releases/download/${version}/python-${pname}-${version}.tar.xz";
-    hash = "sha256-57EKWOzGfA4ihVYTyfLF2yoe7hN/7OnEkG+zLz7QtxI=";
+    hash = "sha256-8k5ZbbN2OvoFFq0nn+fftQfQJbGhb2MEvZNokMXegr0=";
   };
 
   nativeBuildInputs = [
@@ -38,12 +39,6 @@ python3Packages.buildPythonApplication rec {
     setuptools
   ];
 
-  patches = [ ./nix-python-prefix.patch ];
-
-  postPatch = ''
-    substituteInPlace eduvpn/utils.py --subst-var-by out $out
-  '';
-
   checkInputs = with python3Packages; [
     pytestCheckHook
   ];