diff --git a/pkgs/development/python-modules/svg2tikz/default.nix b/pkgs/development/python-modules/svg2tikz/default.nix
index de3e1c96770a..8d143ee4d58a 100644
--- a/pkgs/development/python-modules/svg2tikz/default.nix
+++ b/pkgs/development/python-modules/svg2tikz/default.nix
@@ -7,30 +7,39 @@
   inkex,
   lxml,
   pytestCheckHook,
+  pythonRelaxDepsHook,
 }:
 
 buildPythonPackage rec {
   pname = "svg2tikz";
-  version = "3.0.1";
+  version = "3.1.0";
 
   disabled = pythonOlder "3.7";
 
-  format = "pyproject";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "xyz2tex";
     repo = "svg2tikz";
     rev = "refs/tags/v${version}";
-    hash = "sha256-hvGvJFxhu7llj+tFfZvz12dZ8QYjY7zcLzB5S44l+IM=";
+    hash = "sha256-lL+CQGZMK+rxjw2kTNE6kK3FCt6ARsAD6ROMsXWwDCs=";
   };
 
-  nativeBuildInputs = [ poetry-core ];
+  build-system = [
+    poetry-core
+  ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     inkex
     lxml
   ];
 
+  pythonRelaxDeps = [
+    "lxml"
+  ];
+
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
+
   nativeCheckInputs = [ pytestCheckHook ];
 
   pythonImportsCheck = [ "svg2tikz" ];