diff --git a/pytket/stub_generation/regenerate_stubs b/pytket/stub_generation/regenerate_stubs
index a927b3912c..1cc4ff895e 100755
--- a/pytket/stub_generation/regenerate_stubs
+++ b/pytket/stub_generation/regenerate_stubs
@@ -8,13 +8,17 @@ import pytket
 import pkgutil
 
 
-def replace_in_file_string(file_string: str, matcher: str, replacement: str) -> tuple[str, int]:
+def replace_in_file_string(
+    file_string: str, matcher: str, replacement: str
+) -> tuple[str, int]:
     split_text = re.split(matcher, file_string)
     modified_text = replacement.join(split_text)
     return modified_text, len(split_text) - 1
 
 
-def replace_in_file_string_multiline(file_string: str, matcher: str, replacement: str) -> tuple[str, int]:
+def replace_in_file_string_multiline(
+    file_string: str, matcher: str, replacement: str
+) -> tuple[str, int]:
     split_text = re.split(matcher, file_string, re.MULTILINE)
     modified_text = replacement.join(split_text)
     return modified_text, len(split_text) - 1
@@ -27,8 +31,12 @@ class StubFixer:
     handle_circuit_depth_needed: bool = False
 
     def handle_args_kwargs_types(self, file_string: str) -> str:
-        modified, n_args = replace_in_file_string(file_string, "\*args(?=[^:])", "*args: Any")
-        modified, n_kwargs = replace_in_file_string(modified, "\*\*kwargs(?=[^:])", "**kwargs: Any")
+        modified, n_args = replace_in_file_string(
+            file_string, "\*args(?=[^:])", "*args: Any"
+        )
+        modified, n_kwargs = replace_in_file_string(
+            modified, "\*\*kwargs(?=[^:])", "**kwargs: Any"
+        )
         n_total = n_args + n_kwargs
         if n_total > 0 and not re.search("from typing import .*Any", modified):
             self.handle_args_kwargs_needed = True
@@ -40,50 +48,68 @@ class StubFixer:
         modified_text = "NDArray[".join(split_text)
         if len(split_text) > 1:
             modified_text, _ = replace_in_file_string(modified_text, "\[., .\]", "")
-            modified_text, _ = replace_in_file_string(modified_text, "NDArray\[bool\]", "NDArray[numpy.bool_]")
-            modified_text = "from numpy.typing import NDArray" + os.linesep + modified_text
+            modified_text, _ = replace_in_file_string(
+                modified_text, "NDArray\[bool\]", "NDArray[numpy.bool_]"
+            )
+            modified_text = (
+                "from numpy.typing import NDArray" + os.linesep + modified_text
+            )
             self.handle_numpy_stuff_needed = True
             return modified_text
         return file_string
 
     def print_info(self):
         if not self.handle_args_kwargs_needed:
-            print(f"Info: No file required the transformation `{self.handle_args_kwargs_types.__name__}`. Is it still needed?")
+            print(
+                f"Info: No file required the transformation `{self.handle_args_kwargs_types.__name__}`. Is it still needed?"
+            )
         if not self.handle_numpy_stuff_needed:
-            print(f"Info: No file required the transformation `{self.handle_numpy_stuff.__name__}`. Is it still needed?")
+            print(
+                f"Info: No file required the transformation `{self.handle_numpy_stuff.__name__}`. Is it still needed?"
+            )
 
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(
-        prog='StubGenerator',
-        description='generates type stubs for pybind11 modules',
+        prog="StubGenerator",
+        description="generates type stubs for pybind11 modules",
     )
 
     pytket_dir = Path(__file__).parent.parent.resolve()
     gen_root_dir = pytket_dir
     for mod in pkgutil.iter_modules(pytket._tket.__path__):
-        print(f"Generate {mod.name}.pyi")
-        subprocess.run([
-            "pybind11-stubgen",
-            f"pytket._tket.{mod.name}",
-            "--enum-class-locations", "CXConfigType|BasisOrder|OpType:pytket._tket.circuit",
-            "--enum-class-locations", "PauliSynthStrat:pytket._tket.transform",
-            "--enum-class-locations", "GraphColourMethod|PauliPartitionStrat:pytket._tket.partition",
-            "--enum-class-locations", "SafetyMode:pytket._tket.passes",
-            "--enum-class-locations", "ZXWireType|QuantumType:pytket._tket.zx",
-            "-o", gen_root_dir])
+        if not mod.name.startswith("lib"):
+            print(f"Generate {mod.name}.pyi")
+            subprocess.run(
+                [
+                    "pybind11-stubgen",
+                    f"pytket._tket.{mod.name}",
+                    "--enum-class-locations",
+                    "CXConfigType|BasisOrder|OpType:pytket._tket.circuit",
+                    "--enum-class-locations",
+                    "PauliSynthStrat:pytket._tket.transform",
+                    "--enum-class-locations",
+                    "GraphColourMethod|PauliPartitionStrat:pytket._tket.partition",
+                    "--enum-class-locations",
+                    "SafetyMode:pytket._tket.passes",
+                    "--enum-class-locations",
+                    "ZXWireType|QuantumType:pytket._tket.zx",
+                    "-o",
+                    gen_root_dir,
+                ]
+            )
 
     print("Cleanup:")
     stub_fixer = StubFixer()
-    for path in Path(f'{gen_root_dir}/pytket/_tket').iterdir():
+    for path in Path(f"{gen_root_dir}/pytket/_tket").iterdir():
         if path.is_file() and path.suffix == ".pyi":
             print(f"  Fixing {path}")
-            with path.open('r+') as file:
+            with path.open("r+") as file:
                 text = file.read()
                 text = stub_fixer.handle_args_kwargs_types(text)
                 text = stub_fixer.handle_numpy_stuff(text)
 
-            with path.open('w') as file:
+            with path.open("w") as file:
                 file.write(text)
 
     print("")