# Code Signing and Notarizing

Applications using PyObjC can be signed and notarized in the usual way, but you do need to make sure that the signature contains the right entitlements.

PyObjC uses a limited form of dynamic code generation to create executable stubs that are used to call from (Objective-)C code into Python. This requires an exception from the Hardened Runtime configuration.

In particular, enable “Allow Execution of JIT-compiled code” in the Hardened Runtime configuration. If that doesn’t work enable “Allowed Unsigned Executable Memory” instead.