diff --git a/sentry_sdk/utils.py b/sentry_sdk/utils.py
index a84f2eb3de..64bbd38352 100644
--- a/sentry_sdk/utils.py
+++ b/sentry_sdk/utils.py
@@ -11,7 +11,6 @@
 import threading
 import time
 from collections import namedtuple
-from copy import copy
 from datetime import datetime
 from decimal import Decimal
 from functools import partial, partialmethod, wraps
@@ -618,7 +617,7 @@ def serialize_frame(
         )
 
     if include_local_variables:
-        rv["vars"] = copy(frame.f_locals)
+        rv["vars"] = frame.f_locals.copy()
 
     return rv
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 0464f32b5e..447359a11c 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -31,6 +31,12 @@
     from sentry_sdk._types import Event
 
 
+maximum_python_312 = pytest.mark.skipif(
+    sys.version_info > (3, 12),
+    reason="Since Python 3.13, `FrameLocalsProxy` skips items of `locals()` that have non-`str` keys; this is a CPython implementation detail: https://github.com/python/cpython/blame/7b413952e817ae87bfda2ac85dd84d30a6ce743b/Objects/frameobject.c#L148",
+)
+
+
 class EnvelopeCapturedError(Exception):
     pass
 
@@ -879,6 +885,7 @@ class FooError(Exception):
     assert exception["mechanism"]["meta"]["errno"]["number"] == 69
 
 
+@maximum_python_312
 def test_non_string_variables(sentry_init, capture_events):
     """There is some extremely terrible code in the wild that
     inserts non-strings as variable names into `locals()`."""