diff --git a/samcli/lib/sync/infra_sync_executor.py b/samcli/lib/sync/infra_sync_executor.py
index 15e166c2dd2..2198dec0e09 100644
--- a/samcli/lib/sync/infra_sync_executor.py
+++ b/samcli/lib/sync/infra_sync_executor.py
@@ -72,7 +72,7 @@ class InfraSyncResult:
     _infra_sync_executed: bool
     _code_sync_resources: Set[ResourceIdentifier]
 
-    def __init__(self, executed: bool, code_sync_resources: Set[ResourceIdentifier] = set()) -> None:
+    def __init__(self, executed: bool, code_sync_resources: Optional[Set[ResourceIdentifier]] = None) -> None:
         """
         Constructor
 
@@ -83,6 +83,8 @@ def __init__(self, executed: bool, code_sync_resources: Set[ResourceIdentifier]
         code_sync_resources: Set[ResourceIdentifier]
             Resources that needs a code sync
         """
+        if code_sync_resources is None:
+            code_sync_resources = set()
         self._infra_sync_executed = executed
         self._code_sync_resources = code_sync_resources
 
diff --git a/tests/integration/durable_integ_base.py b/tests/integration/durable_integ_base.py
index 99f6abe2f9a..bfe7a4db728 100644
--- a/tests/integration/durable_integ_base.py
+++ b/tests/integration/durable_integ_base.py
@@ -1,19 +1,18 @@
 import json
-import os
 import re
 import shutil
 import threading
 import time
 from pathlib import Path
-from subprocess import Popen, PIPE, STDOUT, TimeoutExpired
-from typing import Dict, Any, Optional, List
+from subprocess import PIPE, STDOUT, Popen
+from typing import Any, Dict, List, Optional
 from unittest import TestCase
 
 from tests.integration.local.invoke.invoke_integ_base import TIMEOUT
 from tests.testing_utils import (
-    run_command,
-    get_sam_command,
     get_build_command_list,
+    get_sam_command,
+    run_command,
 )
 
 
@@ -143,11 +142,13 @@ def log_output():
     def assert_invoke_output(
         self,
         stdout: str,
-        input_data: Dict[str, Any] = {},
+        input_data: Optional[Dict[str, Any]] = None,
         execution_name: Optional[str] = None,
         expected_status: str = "SUCCEEDED",
     ) -> str:
         """Assert invoke output contains expected fields and return execution ARN."""
+        if input_data is None:
+            input_data = {}
         stdout_str = stdout.strip()
 
         self.assertIn("Execution Summary:", stdout_str, f"Expected execution summary in output: {stdout_str}")
diff --git a/tests/integration/testdata/buildcmd/asset.b998895901bf33127f2c9dce715854f8b35aa73fb7eb5245ba9721580bbe5837/requirements.txt b/tests/integration/testdata/buildcmd/asset.b998895901bf33127f2c9dce715854f8b35aa73fb7eb5245ba9721580bbe5837/requirements.txt
index fd60a205345..569c40587ac 100644
--- a/tests/integration/testdata/buildcmd/asset.b998895901bf33127f2c9dce715854f8b35aa73fb7eb5245ba9721580bbe5837/requirements.txt
+++ b/tests/integration/testdata/buildcmd/asset.b998895901bf33127f2c9dce715854f8b35aa73fb7eb5245ba9721580bbe5837/requirements.txt
@@ -1,3 +1,3 @@
 numpy<1.20.3; python_version < '3.10'
 numpy==1.26.4; python_version >= '3.10'
-cryptography==3.3.2
\ No newline at end of file
+cryptography==46.0.6
\ No newline at end of file
diff --git a/tests/integration/testdata/sync/nested_intrinsics/before/child_stack/child_function/function/requirements.txt b/tests/integration/testdata/sync/nested_intrinsics/before/child_stack/child_function/function/requirements.txt
index 5b6dce93d53..6e692170a02 100644
--- a/tests/integration/testdata/sync/nested_intrinsics/before/child_stack/child_function/function/requirements.txt
+++ b/tests/integration/testdata/sync/nested_intrinsics/before/child_stack/child_function/function/requirements.txt
@@ -1,2 +1,2 @@
 numpy<=2.2.6
-requests
\ No newline at end of file
+requests==2.33.0
\ No newline at end of file
diff --git a/tests/regression/deploy/regression_deploy_base.py b/tests/regression/deploy/regression_deploy_base.py
index 2154ad69100..34f02b97200 100644
--- a/tests/regression/deploy/regression_deploy_base.py
+++ b/tests/regression/deploy/regression_deploy_base.py
@@ -1,5 +1,5 @@
 import os
-from subprocess import Popen, PIPE, TimeoutExpired
+from subprocess import PIPE, Popen, TimeoutExpired
 from unittest import TestCase
 
 TIMEOUT = 300
@@ -85,7 +85,9 @@ def get_deploy_command_list(
 
         return command_list
 
-    def deploy_regression_check(self, args, sam_return_code=0, aws_return_code=0, commands=[]):
+    def deploy_regression_check(self, args, sam_return_code=0, aws_return_code=0, commands=None):
+        if commands is None:
+            commands = []
         sam_stack_name = args.get("sam_stack_name", None)
         aws_stack_name = args.get("aws_stack_name", None)
         if sam_stack_name: