diff --git a/integration-test/plutus_scripts/unroll.plutus b/integration-test/plutus_scripts/unroll.plutus
new file mode 100644
index 00000000..0c0fabf1
--- /dev/null
+++ b/integration-test/plutus_scripts/unroll.plutus
@@ -0,0 +1 @@
+58a20100003232232323232323374a90001bb1498c8d4008400401448c8c92610013330063758a00246eb400452f580264c66ae712410c4e616d654572726f723a207a004984c98cd5ce2481144e616d654572726f723a2076616c696461746f72004984c98cd5ce24810d4e616d654572726f723a20723300498888cc8c014894ccd55cf8008a802099aba0300335742002660040046ae8800400800c8c8c0040040041
\ No newline at end of file
diff --git a/integration-test/run_tests.sh b/integration-test/run_tests.sh
index cc5cccf9..11ea5242 100755
--- a/integration-test/run_tests.sh
+++ b/integration-test/run_tests.sh
@@ -93,7 +93,7 @@ while true; do
     sleep 2
 done
 
-poetry run pytest -m "not (CardanoCLI)" -s -vv -n 4 "$ROOT"/test  --cov=pycardano --cov-config=../.coveragerc --cov-report=xml:../coverage.xml
+poetry run pytest -m "not (CardanoCLI)" -s -vv "$ROOT"/test  --cov=pycardano --cov-config=../.coveragerc --cov-report=xml:../coverage.xml
 
 # Cleanup
 docker compose -f docker-compose-chang.yml down --volumes --remove-orphans
\ No newline at end of file
diff --git a/integration-test/test/test_plutus.py b/integration-test/test/test_plutus.py
index d2f95389..2b60dd40 100644
--- a/integration-test/test/test_plutus.py
+++ b/integration-test/test/test_plutus.py
@@ -4,6 +4,7 @@
 from typing import Dict, Union
 
 import cbor2
+import ogmios as python_ogmios
 import pytest
 from retry import retry
 
@@ -444,6 +445,82 @@ def test_plutus_v3(self):
 
         self.assert_output(taker_address, take_output)
 
+    def test_plutus_v3_unroll(self):
+        # ----------- Giver give ---------------
+
+        with open(
+            "./plutus_scripts/unroll.plutus",
+            "r",
+        ) as f:
+            script_hex = f.read()
+            hello_world_script = bytes.fromhex(script_hex)
+
+        script_hash = plutus_script_hash(PlutusV3Script(hello_world_script))
+
+        script_address = Address(script_hash, network=self.NETWORK)
+
+        giver_address = Address(self.payment_vkey.hash(), network=self.NETWORK)
+
+        builder = TransactionBuilder(self.chain_context)
+        builder.add_input_address(giver_address)
+        builder.add_output(TransactionOutput(script_address, 50000000, datum=Unit()))
+
+        signed_tx = builder.build_and_sign([self.payment_skey], giver_address)
+
+        print("############### Transaction created ###############")
+        print(signed_tx)
+        print(signed_tx.to_cbor_hex())
+        print("############### Submitting transaction ###############")
+        self.chain_context.submit_tx(signed_tx)
+        time.sleep(3)
+
+        # ----------- Taker take ---------------
+
+        utxo_to_spend = self.chain_context.utxos(script_address)[0]
+
+        taker_address = Address(self.payment_vkey.hash(), network=self.NETWORK)
+
+        builder = TransactionBuilder(self.chain_context)
+        builder.ttl = self.chain_context.last_block_slot + 10
+
+        reward_account = Address(
+            staking_part=self.stake_key_pair.verification_key.hash(),
+            network=self.NETWORK,
+        )
+
+        builder.add_script_input(
+            utxo_to_spend, PlutusV3Script(hello_world_script), redeemer=Redeemer(0)
+        )
+        builder.add_proposal(
+            deposit=1234122,
+            reward_account=bytes(reward_account),
+            gov_action=ParameterChangeAction(
+                gov_action_id=GovActionId(
+                    gov_action_index=0,
+                    transaction_id=utxo_to_spend.input.transaction_id,
+                ),
+                protocol_param_update=ProtocolParamUpdate(
+                    min_fee_b=1000,
+                ),
+                policy_hash=None,
+            ),
+            anchor=Anchor(
+                url="https://test-drep.com",
+                data_hash=AnchorDataHash(bytes.fromhex("0" * 64)),
+            ),
+        )
+
+        with pytest.raises(python_ogmios.errors.ResponseError) as e:
+            builder.build_and_sign([self.payment_skey], taker_address)
+
+        for v in [
+            "1234122",
+            "1000",
+            reward_account.staking_part.payload.hex(),
+            utxo_to_spend.input.transaction_id.payload.hex(),
+        ]:
+            assert v in str(e.value)
+
 
 class TestPlutusKupoOgmios(TestPlutus):
     @classmethod
diff --git a/pycardano/serialization.py b/pycardano/serialization.py
index b2c888d1..63dced92 100644
--- a/pycardano/serialization.py
+++ b/pycardano/serialization.py
@@ -41,14 +41,7 @@
     logger.warning("Failed to remove semantic decoder for CBOR tag 258", e)
     pass
 
-from cbor2 import (
-    CBOREncoder,
-    CBORSimpleValue,
-    CBORTag,
-    FrozenDict,
-    dumps,
-    undefined,
-)
+from cbor2 import CBOREncoder, CBORSimpleValue, CBORTag, FrozenDict, dumps, undefined
 from frozenlist import FrozenList
 from pprintpp import pformat
 
@@ -948,8 +941,8 @@ def __repr__(self):
     def __copy__(self):
         return self.__class__(self)
 
-    def __deepcopy__(self, memodict={}):
-        return self.__class__(deepcopy(self.data))
+    def __deepcopy__(self, memo):
+        return self.__class__(deepcopy(self.data, memo))
 
     def validate(self):
         for key, value in self.data.items():
@@ -1082,6 +1075,9 @@ def from_primitive(
 
         raise ValueError(f"Cannot deserialize {value} to {cls}")
 
+    def __deepcopy__(self, memo):
+        return self.__class__(deepcopy(list(self), memo), use_tag=self._use_tag)
+
 
 class NonEmptyOrderedSet(OrderedSet[T]):
     def __init__(self, iterable: Optional[List[T]] = None, use_tag: bool = True):
diff --git a/test/pycardano/test_serialization.py b/test/pycardano/test_serialization.py
index 81fa12fd..d7878717 100644
--- a/test/pycardano/test_serialization.py
+++ b/test/pycardano/test_serialization.py
@@ -1,4 +1,5 @@
 from collections import defaultdict, deque
+from copy import deepcopy
 from dataclasses import dataclass, field
 from test.pycardano.util import check_two_way_cbor
 from typing import (
@@ -879,3 +880,105 @@ class ChildCodedClass(TestCodedClass):
     assert restored.value == "test"
     assert restored.numbers == [1, 2]
     assert restored.extra == "extra"
+
+
+def test_ordered_set_deepcopy():
+    """Test the deepcopy implementation of OrderedSet."""
+    # Test basic deepcopy
+
+    class MyOrderedSet(OrderedSet):
+        pass
+
+    s = MyOrderedSet([1, 2, 3], use_tag=True)
+    s_copy = deepcopy(s)
+
+    assert s == s_copy
+    assert s is not s_copy
+    assert s._use_tag == s_copy._use_tag
+
+    # Test that modifications don't affect each other
+    s_copy.append(4)
+    assert 4 in s_copy
+    assert 4 not in s
+
+    # Test with complex objects
+    class TestObj:
+        def __init__(self, value):
+            self.value = value
+
+        def __str__(self):
+            return f"TestObj({self.value})"
+
+    obj1 = TestObj("a")
+    obj2 = TestObj("b")
+
+    s = MyOrderedSet([obj1, obj2], use_tag=False)
+    s_copy = deepcopy(s)
+
+    # Objects should be equal but not the same instances
+    assert len(s) == len(s_copy) == 2
+    assert s[0].value == s_copy[0].value
+    assert s[1].value == s_copy[1].value
+    assert s[0] is not s_copy[0]
+    assert s[1] is not s_copy[1]
+
+    # Test that memodict works with shared references
+    shared_obj = TestObj("shared")
+    s = MyOrderedSet([shared_obj, shared_obj], use_tag=True)  # Same object twice
+
+    s_copy = deepcopy(s)
+    # In the copy, both elements should be the same object (preserved reference)
+    assert len(s_copy) == 1
+    assert s_copy[0] is not shared_obj
+
+
+def test_non_empty_ordered_set_deepcopy():
+    """Test the deepcopy implementation of NonEmptyOrderedSet."""
+
+    class MyNonEmptyOrderedSet(NonEmptyOrderedSet):
+        pass
+
+    # Test basic deepcopy
+    s = MyNonEmptyOrderedSet([1, 2, 3], use_tag=True)
+    s_copy = deepcopy(s)
+
+    assert s == s_copy
+    assert s is not s_copy
+    assert s._use_tag == s_copy._use_tag
+
+    # Test with nested lists
+    nested_list = [[1, 2], [3, 4]]
+    s = MyNonEmptyOrderedSet(nested_list, use_tag=False)
+    s_copy = deepcopy(s)
+
+    # Lists should be equal but not the same instances
+    assert s[0] == s_copy[0]
+    assert s[1] == s_copy[1]
+    assert s[0] is not s_copy[0]
+    assert s[1] is not s_copy[1]
+
+    # Modifying the copy shouldn't affect the original
+    s_copy[0].append(5)
+    assert s[0] == [1, 2]
+    assert s_copy[0] == [1, 2, 5]
+
+    # Test complex nesting with CBORSerializable objects
+    @dataclass
+    class TestData(MapCBORSerializable):
+        value: int = 0
+
+    obj1 = TestData(1)
+    obj2 = TestData(2)
+    s = MyNonEmptyOrderedSet([obj1, obj2], use_tag=True)
+    s_copy = deepcopy(s)
+
+    # Objects should be equal but not the same instances
+    assert s[0].value == s_copy[0].value
+    assert s[1].value == s_copy[1].value
+    assert s[0] is not s_copy[0]
+    assert s[1] is not s_copy[1]
+
+    # Modifying the copy shouldn't affect the original
+    s_copy[0].value = 100
+    assert s[0].value == 1
+    assert s_copy[0].value == 100