diff --git a/sentry_sdk/_lru_cache.py b/sentry_sdk/_lru_cache.py
index 825c773529..36b7c5e571 100644
--- a/sentry_sdk/_lru_cache.py
+++ b/sentry_sdk/_lru_cache.py
@@ -62,8 +62,6 @@
 
 """
 
-from copy import copy, deepcopy
-
 SENTINEL = object()
 
 
@@ -91,13 +89,6 @@ def __init__(self, max_size):
 
         self.hits = self.misses = 0
 
-    def __copy__(self):
-        cache = LRUCache(self.max_size)
-        cache.full = self.full
-        cache.cache = copy(self.cache)
-        cache.root = deepcopy(self.root)
-        return cache
-
     def set(self, key, value):
         link = self.cache.get(key, SENTINEL)
 
diff --git a/sentry_sdk/flag_utils.py b/sentry_sdk/flag_utils.py
index 2b345a7f0b..cf4800e855 100644
--- a/sentry_sdk/flag_utils.py
+++ b/sentry_sdk/flag_utils.py
@@ -1,4 +1,3 @@
-from copy import copy
 from typing import TYPE_CHECKING
 
 import sentry_sdk
@@ -25,12 +24,6 @@ def clear(self):
         # type: () -> None
         self.buffer = LRUCache(self.capacity)
 
-    def __copy__(self):
-        # type: () -> FlagBuffer
-        buffer = FlagBuffer(capacity=self.capacity)
-        buffer.buffer = copy(self.buffer)
-        return buffer
-
     def get(self):
         # type: () -> list[FlagData]
         return [{"flag": key, "result": value} for key, value in self.buffer.get_all()]
diff --git a/sentry_sdk/scope.py b/sentry_sdk/scope.py
index bb45143c48..cf72fabdd1 100644
--- a/sentry_sdk/scope.py
+++ b/sentry_sdk/scope.py
@@ -1,7 +1,7 @@
 import os
 import sys
 import warnings
-from copy import copy
+from copy import copy, deepcopy
 from collections import deque
 from contextlib import contextmanager
 from enum import Enum
@@ -252,7 +252,7 @@ def __copy__(self):
 
         rv._last_event_id = self._last_event_id
 
-        rv._flags = copy(self._flags)
+        rv._flags = deepcopy(self._flags)
 
         return rv
 
diff --git a/tests/test_lru_cache.py b/tests/test_lru_cache.py
index cab9bbc7eb..615c66f4a0 100644
--- a/tests/test_lru_cache.py
+++ b/tests/test_lru_cache.py
@@ -1,5 +1,5 @@
 import pytest
-from copy import copy
+from copy import deepcopy
 
 from sentry_sdk._lru_cache import LRUCache
 
@@ -66,13 +66,22 @@ def test_cache_copy():
     cache.set(0, 0)
     cache.set(1, 1)
 
-    copied = copy(cache)
+    copied = deepcopy(cache)
     cache.set(2, 2)
     cache.set(3, 3)
     assert copied.get_all() == [(0, 0), (1, 1)]
     assert cache.get_all() == [(1, 1), (2, 2), (3, 3)]
 
-    copied = copy(cache)
+    copied = deepcopy(cache)
     cache.get(1)
     assert copied.get_all() == [(1, 1), (2, 2), (3, 3)]
     assert cache.get_all() == [(2, 2), (3, 3), (1, 1)]
+
+
+def test_cache_pollution():
+    cache1 = LRUCache(max_size=2)
+    cache1.set(1, True)
+    cache2 = deepcopy(cache1)
+    cache2.set(1, False)
+    assert cache1.get(1) is True
+    assert cache2.get(1) is False
diff --git a/tests/test_scope.py b/tests/test_scope.py
index a03eb07a99..9b16dc4344 100644
--- a/tests/test_scope.py
+++ b/tests/test_scope.py
@@ -43,6 +43,28 @@ def test_all_slots_copied():
         assert getattr(scope_copy, attr) == getattr(scope, attr)
 
 
+def test_scope_flags_copy():
+    # Assert forking creates a deepcopy of the flag buffer. The new
+    # scope is free to mutate without consequence to the old scope. The
+    # old scope is free to mutate without consequence to the new scope.
+    old_scope = Scope()
+    old_scope.flags.set("a", True)
+
+    new_scope = old_scope.fork()
+    new_scope.flags.set("a", False)
+    old_scope.flags.set("b", True)
+    new_scope.flags.set("c", True)
+
+    assert old_scope.flags.get() == [
+        {"flag": "a", "result": True},
+        {"flag": "b", "result": True},
+    ]
+    assert new_scope.flags.get() == [
+        {"flag": "a", "result": False},
+        {"flag": "c", "result": True},
+    ]
+
+
 def test_merging(sentry_init, capture_events):
     sentry_init()