diff --git a/pkgs/development/python-modules/manimpango/default.nix b/pkgs/development/python-modules/manimpango/default.nix
index 3137d1e594bb..58cfef91d255 100644
--- a/pkgs/development/python-modules/manimpango/default.nix
+++ b/pkgs/development/python-modules/manimpango/default.nix
@@ -25,6 +25,11 @@ buildPythonPackage rec {
     hash = "sha256-nN+XOnki8fG7URMy2Fhs2X+yNi8Y7wDo53d61xaRa3w=";
   };
 
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace-fail "Cython>=3.0.2,<3.1" Cython
+  '';
+
   nativeBuildInputs = [ pkg-config ];
 
   buildInputs = [ pango ];