diff --git a/dev-requirements.txt b/dev-requirements.txt
index 081fea50d..df3f6b494 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,7 +1,7 @@
 pytest==8.4.2  # version 8.4.2 is the last one supporting Python 3.9
 flake8==7.3.0
 pytest-timeout==2.4.0
-pytest-asyncio==1.0.0 # upgrading leads to stuck tests
+pytest-asyncio==0.26.0  # upgrading leads to stuck / failed tests
 requests==2.32.5
 httpx==0.28.1
 httpx_ws==0.7.1  # upgrading leads to failures in tests
\ No newline at end of file
diff --git a/gns3server/compute/base_manager.py b/gns3server/compute/base_manager.py
index 48082e579..17a41fe7e 100644
--- a/gns3server/compute/base_manager.py
+++ b/gns3server/compute/base_manager.py
@@ -24,6 +24,7 @@ import socket
 import shutil
 import re
 import logging
+import inspect
 
 log = logging.getLogger(__name__)
 
@@ -196,7 +197,7 @@ class BaseManager:
             node_id = str(uuid4())
 
         node = self._NODE_CLASS(name, node_id, project, self, *args, **kwargs)
-        if asyncio.iscoroutinefunction(node.create):
+        if inspect.iscoroutinefunction(node.create):
             await node.create()
         else:
             node.create()
@@ -245,7 +246,7 @@ class BaseManager:
         """
 
         node = self.get_node(node_id)
-        if asyncio.iscoroutinefunction(node.close):
+        if inspect.iscoroutinefunction(node.close):
             await node.close()
         else:
             node.close()
diff --git a/gns3server/utils/asyncio/__init__.py b/gns3server/utils/asyncio/__init__.py
index 131145eb9..34ae5d441 100644
--- a/gns3server/utils/asyncio/__init__.py
+++ b/gns3server/utils/asyncio/__init__.py
@@ -20,6 +20,7 @@ import asyncio
 import sys
 import os
 import threading
+import inspect
 
 
 async def wait_run_in_executor(func, *args, **kwargs):
@@ -103,7 +104,7 @@ async def wait_for_process_termination(process, timeout=10):
 async def _check_process(process, termination_callback):
     if not hasattr(sys, "_called_from_test") or not sys._called_from_test:
         returncode = await process.wait()
-        if asyncio.iscoroutinefunction(termination_callback):
+        if inspect.iscoroutinefunction(termination_callback):
             await termination_callback(returncode)
         else:
             termination_callback(returncode)
diff --git a/requirements.txt b/requirements.txt
index 63ef755bf..527d08c33 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,8 +11,8 @@ psutil>=7.2.1
 async-timeout>=5.0.1,<5.1; python_version < '3.11'  # this library has effectively been upstreamed into Python 3.11+
 distro>=1.9.0
 py-cpuinfo>=9.0.0,<10.0
-greenlet==3.2.0  # necessary to run sqlalchemy on Python 3.13
-sqlalchemy==2.0.46
+greenlet==3.3.1; python_version >= '3.13' # necessary to run sqlalchemy on Python >= 3.13
+sqlalchemy==2.0.43
 aiosqlite==0.21.0
 alembic==1.15.2
 bcrypt==5.0.0
diff --git a/tests/utils/test_asyncio.py b/tests/utils/test_asyncio.py
index 1b0056587..cb59bfe39 100644
--- a/tests/utils/test_asyncio.py
+++ b/tests/utils/test_asyncio.py
@@ -18,11 +18,9 @@
 
 import asyncio
 import pytest
-import sys
-from unittest.mock import MagicMock
 
-from gns3server.utils.asyncio import wait_run_in_executor, subprocess_check_output, wait_for_process_termination, locking
-from tests.utils import AsyncioMagicMock
+from gns3server.utils.asyncio import wait_run_in_executor, subprocess_check_output, locking
+
 
 
 @pytest.mark.asyncio