diff --git a/dev-requirements.txt b/dev-requirements.txt
index 8b0b9a2b..58b361a2 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,8 +1,6 @@
 -rrequirements.txt
 
-pytest==7.2.0; python_version >= '3.7'
-pytest==7.0.1; python_version < '3.7'  # v7.0.1 is the last version to support Python 3.6
+pytest==7.2.0
 flake8==5.0.4
 pytest-timeout==2.1.0
-pytest-aiohttp==1.0.4; python_version >= '3.7'
-pytest-aiohttp==0.3.0; python_version < '3.7'  # last version to support Python 3.6
+pytest-aiohttp==1.0.4
diff --git a/gns3server/controller/compute.py b/gns3server/controller/compute.py
index 2b903745..5d61027c 100644
--- a/gns3server/controller/compute.py
+++ b/gns3server/controller/compute.py
@@ -484,7 +484,7 @@ class Compute:
         return self._getUrl(path)
 
     async def _run_http_query(self, method, path, data=None, timeout=20, raw=False):
-        with async_timeout.timeout(timeout):
+        async with async_timeout.timeout(delay=timeout):
             url = self._getUrl(path)
             headers = {}
             headers['content-type'] = 'application/json'
diff --git a/gns3server/controller/snapshot.py b/gns3server/controller/snapshot.py
index 792a9261..46041c3d 100644
--- a/gns3server/controller/snapshot.py
+++ b/gns3server/controller/snapshot.py
@@ -52,15 +52,15 @@ class Snapshot:
         self._project = project
         if name:
             self._name = name
-            self._created_at = datetime.now().timestamp()
-            filename = self._name + "_" + datetime.utcfromtimestamp(self._created_at).replace(tzinfo=None).strftime(FILENAME_TIME_FORMAT) + ".gns3project"
+            self._created_at = datetime.now(timezone.utc).timestamp()
+            filename = self._name + "_" + datetime.fromtimestamp(self._created_at, tz=timezone.utc).replace(tzinfo=None).strftime(FILENAME_TIME_FORMAT) + ".gns3project"
         else:
             self._name = filename.split("_")[0]
             datestring = filename.replace(self._name + "_", "").split(".")[0]
             try:
                 self._created_at = datetime.strptime(datestring, FILENAME_TIME_FORMAT).replace(tzinfo=timezone.utc).timestamp()
             except ValueError:
-                self._created_at = datetime.utcnow().timestamp()
+                self._created_at = datetime.now(timezone.utc)
         self._path = os.path.join(project.path, "snapshots", filename)
 
     @property
diff --git a/pytest.ini b/pytest.ini
index a37fdb73..e5b6c56c 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,4 +1,3 @@
 [pytest]
 asyncio_mode=auto
 log_level=NOTSET
-ignore=env
\ No newline at end of file
diff --git a/tests/compute/builtin/nodes/test_cloud.py b/tests/compute/builtin/nodes/test_cloud.py
index 3e5e5113..09506b45 100644
--- a/tests/compute/builtin/nodes/test_cloud.py
+++ b/tests/compute/builtin/nodes/test_cloud.py
@@ -31,7 +31,7 @@ def nio():
 
 
 @pytest.fixture
-async def manager(loop):
+async def manager():
 
     m = MagicMock()
     m.module_name = "builtins"
@@ -113,7 +113,7 @@ def test_json_without_ports(on_gns3vm, compute_project, manager):
     }
 
 
-async def test_update_port_mappings(loop, on_gns3vm, compute_project):
+async def test_update_port_mappings(on_gns3vm, compute_project):
     """
     We don't allow an empty interface in the middle of port list
     """
@@ -153,7 +153,7 @@ async def test_update_port_mappings(loop, on_gns3vm, compute_project):
     assert cloud.ports_mapping == ports1
 
 
-async def test_linux_ethernet_raw_add_nio(loop, linux_platform, compute_project, nio):
+async def test_linux_ethernet_raw_add_nio(linux_platform, compute_project, nio):
     ports = [
         {
             "interface": "eth0",
@@ -180,7 +180,7 @@ async def test_linux_ethernet_raw_add_nio(loop, linux_platform, compute_project,
     ])
 
 
-async def test_linux_ethernet_raw_add_nio_bridge(loop, linux_platform, compute_project, nio):
+async def test_linux_ethernet_raw_add_nio_bridge(linux_platform, compute_project, nio):
     """
     Bridge can't be connected directly to a cloud we use a tap in the middle
     """
diff --git a/tests/compute/docker/test_docker.py b/tests/compute/docker/test_docker.py
index 4b925190..12e47342 100644
--- a/tests/compute/docker/test_docker.py
+++ b/tests/compute/docker/test_docker.py
@@ -25,7 +25,7 @@ from gns3server.compute.docker.docker_error import DockerError, DockerHttp404Err
 
 
 @pytest.fixture
-async def vm(loop):
+async def vm():
 
     vm = Docker()
     vm._connected = True
diff --git a/tests/compute/docker/test_docker_vm.py b/tests/compute/docker/test_docker_vm.py
index e5271edd..81825eba 100644
--- a/tests/compute/docker/test_docker_vm.py
+++ b/tests/compute/docker/test_docker_vm.py
@@ -31,8 +31,11 @@ from gns3server.compute.docker import Docker
 from unittest.mock import patch, MagicMock, call
 
 
+pytestmark = pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
+
+
 @pytest.fixture()
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = Docker.instance()
     m.port_manager = port_manager
@@ -40,7 +43,7 @@ async def manager(loop, port_manager):
 
 
 @pytest.fixture(scope="function")
-async def vm(loop, compute_project, manager):
+async def vm(compute_project, manager):
 
     vm = DockerVM("test", str(uuid.uuid4()), compute_project, manager, "ubuntu:latest")
     vm._cid = "e90e34656842"
diff --git a/tests/compute/dynamips/test_dynamips_manager.py b/tests/compute/dynamips/test_dynamips_manager.py
index aee2c326..11bbdfc0 100644
--- a/tests/compute/dynamips/test_dynamips_manager.py
+++ b/tests/compute/dynamips/test_dynamips_manager.py
@@ -29,7 +29,7 @@ from tests.utils import asyncio_patch, AsyncioMagicMock
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = Dynamips.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/dynamips/test_dynamips_router.py b/tests/compute/dynamips/test_dynamips_router.py
index 7657422e..1f3d0a21 100644
--- a/tests/compute/dynamips/test_dynamips_router.py
+++ b/tests/compute/dynamips/test_dynamips_router.py
@@ -26,7 +26,7 @@ from gns3server.config import Config
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = Dynamips.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/iou/test_iou_vm.py b/tests/compute/iou/test_iou_vm.py
index 19a8ba70..9d2c8d48 100644
--- a/tests/compute/iou/test_iou_vm.py
+++ b/tests/compute/iou/test_iou_vm.py
@@ -37,7 +37,7 @@ if not sys.platform.startswith("win"):
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = IOU.instance()
     m.port_manager = port_manager
@@ -45,7 +45,7 @@ async def manager(loop, port_manager):
 
 
 @pytest.fixture(scope="function")
-async def vm(loop, compute_project, manager, tmpdir, fake_iou_bin, iourc_file):
+async def vm(compute_project, manager, tmpdir, fake_iou_bin, iourc_file):
 
     vm = IOUVM("test", str(uuid.uuid4()), compute_project, manager, application_id=1)
     config = manager.config.get_section_config("IOU")
diff --git a/tests/compute/qemu/test_qcow2.py b/tests/compute/qemu/test_qcow2.py
index d185135b..b14e631e 100644
--- a/tests/compute/qemu/test_qcow2.py
+++ b/tests/compute/qemu/test_qcow2.py
@@ -66,7 +66,7 @@ def test_invalid_empty_file(tmpdir):
 
 
 @pytest.mark.skipif(qemu_img() is None, reason="qemu-img is not available")
-async def test_rebase(loop, tmpdir):
+async def test_rebase(tmpdir):
 
     shutil.copy("tests/resources/empty8G.qcow2", str(tmpdir / "empty16G.qcow2"))
     shutil.copy("tests/resources/linked.qcow2", str(tmpdir / "linked.qcow2"))
diff --git a/tests/compute/qemu/test_qemu_vm.py b/tests/compute/qemu/test_qemu_vm.py
index 4b7c0685..b35a21a5 100644
--- a/tests/compute/qemu/test_qemu_vm.py
+++ b/tests/compute/qemu/test_qemu_vm.py
@@ -34,7 +34,7 @@ from gns3server.compute.notification_manager import NotificationManager
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = Qemu.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/test_base_node.py b/tests/compute/test_base_node.py
index d96c67ce..50060e3a 100644
--- a/tests/compute/test_base_node.py
+++ b/tests/compute/test_base_node.py
@@ -29,7 +29,7 @@ from gns3server.compute.nios.nio_udp import NIOUDP
 
 
 @pytest.fixture(scope="function")
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VPCS.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/test_manager.py b/tests/compute/test_manager.py
index eef0d1d2..556072db 100644
--- a/tests/compute/test_manager.py
+++ b/tests/compute/test_manager.py
@@ -29,7 +29,7 @@ from gns3server.utils import force_unix_path
 
 
 @pytest.fixture(scope="function")
-async def vpcs(loop, port_manager):
+async def vpcs(port_manager):
 
     VPCS._instance = None
     vpcs = VPCS.instance()
@@ -38,7 +38,7 @@ async def vpcs(loop, port_manager):
 
 
 @pytest.fixture(scope="function")
-async def qemu(loop, port_manager):
+async def qemu(port_manager):
 
     Qemu._instance = None
     Qemu._init_config_disk = MagicMock()  # do not create the config.img image
diff --git a/tests/compute/test_project.py b/tests/compute/test_project.py
index 6ae23717..11870b62 100644
--- a/tests/compute/test_project.py
+++ b/tests/compute/test_project.py
@@ -33,7 +33,7 @@ from gns3server.config import Config
 
 
 @pytest.fixture(scope="function")
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VPCS.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/traceng/test_traceng_vm.py b/tests/compute/traceng/test_traceng_vm.py
index e4d381dd..ce36a347 100644
--- a/tests/compute/traceng/test_traceng_vm.py
+++ b/tests/compute/traceng/test_traceng_vm.py
@@ -28,7 +28,7 @@ from gns3server.compute.notification_manager import NotificationManager
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = TraceNG.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/virtualbox/test_virtualbox_manager.py b/tests/compute/virtualbox/test_virtualbox_manager.py
index 3ba1d9eb..ddbb28b9 100644
--- a/tests/compute/virtualbox/test_virtualbox_manager.py
+++ b/tests/compute/virtualbox/test_virtualbox_manager.py
@@ -29,7 +29,7 @@ from tests.utils import asyncio_patch
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VirtualBox.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/virtualbox/test_virtualbox_vm.py b/tests/compute/virtualbox/test_virtualbox_vm.py
index 12d59656..766f0215 100644
--- a/tests/compute/virtualbox/test_virtualbox_vm.py
+++ b/tests/compute/virtualbox/test_virtualbox_vm.py
@@ -25,7 +25,7 @@ from gns3server.compute.virtualbox import VirtualBox
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VirtualBox.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/vmware/test_vmware_manager.py b/tests/compute/vmware/test_vmware_manager.py
index 9953d1e8..336ede54 100644
--- a/tests/compute/vmware/test_vmware_manager.py
+++ b/tests/compute/vmware/test_vmware_manager.py
@@ -21,7 +21,7 @@ from gns3server.compute.vmware import VMware
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VMware.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/vmware/test_vmware_vm.py b/tests/compute/vmware/test_vmware_vm.py
index d160e245..2b34afa7 100644
--- a/tests/compute/vmware/test_vmware_vm.py
+++ b/tests/compute/vmware/test_vmware_vm.py
@@ -22,7 +22,7 @@ from gns3server.compute.vmware import VMware
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VMware.instance()
     m.port_manager = port_manager
diff --git a/tests/compute/vpcs/test_vpcs_vm.py b/tests/compute/vpcs/test_vpcs_vm.py
index 618cabea..cff3bf4f 100644
--- a/tests/compute/vpcs/test_vpcs_vm.py
+++ b/tests/compute/vpcs/test_vpcs_vm.py
@@ -31,7 +31,7 @@ from gns3server.compute.notification_manager import NotificationManager
 
 
 @pytest.fixture
-async def manager(loop, port_manager):
+async def manager(port_manager):
 
     m = VPCS.instance()
     m.port_manager = port_manager
@@ -39,7 +39,7 @@ async def manager(loop, port_manager):
 
 
 @pytest.fixture(scope="function")
-async def vm(loop, compute_project, manager, tmpdir, ubridge_path):
+async def vm(compute_project, manager, tmpdir, ubridge_path):
 
     vm = VPCSVM("test", "00010203-0405-0607-0809-0a0b0c0d0e0f", compute_project, manager)
     vm._vpcs_version = parse_version("0.9")
diff --git a/tests/conftest.py b/tests/conftest.py
index 7311b7e6..b8ee196c 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -24,7 +24,7 @@ sys.original_platform = sys.platform
 
 
 if sys.platform.startswith("win"):
-    @pytest.yield_fixture(scope="session")
+    @pytest.fixture(scope="session")
     def loop(request):
         """Return an event loop and destroy it at the end of test"""
 
@@ -72,7 +72,7 @@ def compute(controller):
 
 
 @pytest.fixture
-async def project(loop, tmpdir, controller):
+async def project(tmpdir, controller):
 
     return await controller.add_project(name="Test")
 
diff --git a/tests/controller/gns3vm/test_remote_gns3_vm.py b/tests/controller/gns3vm/test_remote_gns3_vm.py
index 50a470cc..46e86056 100644
--- a/tests/controller/gns3vm/test_remote_gns3_vm.py
+++ b/tests/controller/gns3vm/test_remote_gns3_vm.py
@@ -55,7 +55,7 @@ async def test_start(gns3vm, controller):
     assert gns3vm.password == "world"
 
 
-async def test_start_invalid_vm(loop, gns3vm, controller):
+async def test_start_invalid_vm(gns3vm, controller):
 
     await controller.add_compute("r1",
                                  name="R1",
diff --git a/tests/controller/gns3vm/test_virtualbox_gns3_vm.py b/tests/controller/gns3vm/test_virtualbox_gns3_vm.py
index eac3bf22..31f6d738 100644
--- a/tests/controller/gns3vm/test_virtualbox_gns3_vm.py
+++ b/tests/controller/gns3vm/test_virtualbox_gns3_vm.py
@@ -25,7 +25,7 @@ from gns3server.controller.gns3vm.virtualbox_gns3_vm import VirtualBoxGNS3VM
 
 
 @pytest.fixture
-async def gns3vm(loop, controller):
+async def gns3vm(controller):
 
     vm = VirtualBoxGNS3VM(controller)
     vm.vmname = "GNS3 VM"
diff --git a/tests/controller/gns3vm/test_vmware_gns3_vm.py b/tests/controller/gns3vm/test_vmware_gns3_vm.py
index cb0d54ad..9b256e31 100644
--- a/tests/controller/gns3vm/test_vmware_gns3_vm.py
+++ b/tests/controller/gns3vm/test_vmware_gns3_vm.py
@@ -21,7 +21,7 @@ from gns3server.controller.gns3vm.vmware_gns3_vm import VMwareGNS3VM
 
 
 @pytest.fixture
-async def gns3vm(loop, controller):
+async def gns3vm(controller):
 
     vm = VMwareGNS3VM(controller)
     vm.vmname = "GNS3 VM"
diff --git a/tests/controller/test_export_project.py b/tests/controller/test_export_project.py
index 9406afd7..206a3453 100644
--- a/tests/controller/test_export_project.py
+++ b/tests/controller/test_export_project.py
@@ -33,7 +33,7 @@ from gns3server.utils.asyncio import aiozipstream
 
 
 @pytest.fixture
-async def project(loop, controller):
+async def project(controller):
 
     p = Project(controller=controller, name="test")
     p.dump = MagicMock()
diff --git a/tests/controller/test_gns3vm.py b/tests/controller/test_gns3vm.py
index 8d01fae9..0058ed4c 100644
--- a/tests/controller/test_gns3vm.py
+++ b/tests/controller/test_gns3vm.py
@@ -47,7 +47,7 @@ def dummy_gns3vm(controller, dummy_engine):
     return vm
 
 
-async def test_list(loop, controller):
+async def test_list(controller):
 
     vm = GNS3VM(controller)
     with asyncio_patch("gns3server.controller.gns3vm.vmware_gns3_vm.VMwareGNS3VM.list", return_value=[{"vmname": "test", "vmx_path": "test"}]):
@@ -60,14 +60,14 @@ async def test_list(loop, controller):
         await vm.list("hyperv")
 
 
-async def test_json(loop, controller):
+async def test_json(controller):
 
     vm = GNS3VM(controller)
     assert vm.__json__() == vm._settings
 
 
 @pytest.mark.skipif(sys.platform.startswith("win"), reason="Not working well on Windows")
-async def test_update_settings(loop, controller):
+async def test_update_settings(controller):
 
     vm = GNS3VM(controller)
     vm.settings = {
diff --git a/tests/controller/test_import_project.py b/tests/controller/test_import_project.py
index 1ef9a2d5..e80da797 100644
--- a/tests/controller/test_import_project.py
+++ b/tests/controller/test_import_project.py
@@ -166,7 +166,7 @@ async def test_import_with_images(tmpdir, controller):
     assert os.path.exists(path), path
 
 
-async def test_import_iou_linux_no_vm(loop, linux_platform, tmpdir, controller):
+async def test_import_iou_linux_no_vm(linux_platform, tmpdir, controller):
     """
     On non linux host IOU should be local if we don't have a GNS3 VM
     """
@@ -210,7 +210,7 @@ async def test_import_iou_linux_no_vm(loop, linux_platform, tmpdir, controller):
         assert topo["topology"]["nodes"][0]["compute_id"] == "local"
 
 
-async def test_import_iou_linux_with_vm(loop, linux_platform, tmpdir, controller):
+async def test_import_iou_linux_with_vm(linux_platform, tmpdir, controller):
     """
     On non linux host IOU should be vm if we have a GNS3 VM configured
     """
@@ -255,7 +255,7 @@ async def test_import_iou_linux_with_vm(loop, linux_platform, tmpdir, controller
         assert topo["topology"]["nodes"][0]["compute_id"] == "vm"
 
 
-async def test_import_nat_non_linux(loop, windows_platform, tmpdir, controller):
+async def test_import_nat_non_linux(windows_platform, tmpdir, controller):
     """
     On non linux host NAT should be moved to the GNS3 VM
     """
@@ -300,7 +300,7 @@ async def test_import_nat_non_linux(loop, windows_platform, tmpdir, controller):
         assert topo["topology"]["nodes"][0]["compute_id"] == "vm"
 
 
-async def test_import_iou_non_linux(loop, windows_platform, tmpdir, controller):
+async def test_import_iou_non_linux(windows_platform, tmpdir, controller):
     """
     On non linux host IOU should be moved to the GNS3 VM
     """
@@ -356,7 +356,7 @@ async def test_import_iou_non_linux(loop, windows_platform, tmpdir, controller):
     mock.assert_called_with(controller._computes["vm"], project_id, project.path, os.path.join('project-files', 'iou', topo["topology"]["nodes"][0]['node_id']))
 
 
-async def test_import_node_id(loop, linux_platform, tmpdir, controller):
+async def test_import_node_id(linux_platform, tmpdir, controller):
     """
     When importing a node, node_id should change
     """
@@ -449,7 +449,7 @@ async def test_import_node_id(loop, linux_platform, tmpdir, controller):
         assert os.path.exists(os.path.join(project.path, "project-files", "iou", topo["topology"]["nodes"][0]["node_id"], "startup.cfg"))
 
 
-async def test_import_keep_compute_id(loop, windows_platform, tmpdir, controller):
+async def test_import_keep_compute_id(windows_platform, tmpdir, controller):
     """
     On linux host IOU should be moved to the GNS3 VM
     """
diff --git a/tests/test_config.py b/tests/test_config.py
index f670ad54..cdaa346e 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -53,7 +53,7 @@ def write_config(tmpdir, settings):
     return path
 
 
-def test_get_section_config(loop, tmpdir):
+def test_get_section_config(tmpdir):
 
     config = load_config(tmpdir, {
         "Server": {
@@ -63,7 +63,7 @@ def test_get_section_config(loop, tmpdir):
     assert dict(config.get_section_config("Server")) == {"host": "127.0.0.1"}
 
 
-def test_set_section_config(loop, tmpdir):
+def test_set_section_config(tmpdir):
 
     config = load_config(tmpdir, {
         "Server": {
@@ -77,7 +77,7 @@ def test_set_section_config(loop, tmpdir):
     assert dict(config.get_section_config("Server")) == {"host": "192.168.1.1", "local": "true"}
 
 
-def test_set(loop, tmpdir):
+def test_set(tmpdir):
 
     config = load_config(tmpdir, {
         "Server": {
@@ -90,7 +90,7 @@ def test_set(loop, tmpdir):
     assert dict(config.get_section_config("Server")) == {"host": "192.168.1.1"}
 
 
-def test_reload(loop, tmpdir):
+def test_reload(tmpdir):
 
     config = load_config(tmpdir, {
         "Server": {
diff --git a/tests/utils.py b/tests/utils.py
index 42daccda..6e4ade7d 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -105,5 +105,5 @@ class AsyncioBytesIO(io.BytesIO):
     async def write(self, data):
         return super().write(data)
 
-    async def close(self):
-        return super().close()
+    # async def close(self):
+    #     return super().close()
diff --git a/tests/utils/test_asyncio.py b/tests/utils/test_asyncio.py
index 9e66c124..f9f45feb 100644
--- a/tests/utils/test_asyncio.py
+++ b/tests/utils/test_asyncio.py
@@ -44,7 +44,7 @@ async def test_exception_wait_run_in_executor():
 
 
 @pytest.mark.skipif(sys.platform.startswith("win"), reason="Not supported on Windows")
-async def test_subprocess_check_output(loop, tmpdir):
+async def test_subprocess_check_output(tmpdir):
 
     path = str(tmpdir / "test")
     result = await subprocess_check_output("echo", "-n", path)
diff --git a/tests/web/test_response.py b/tests/web/test_response.py
index 837f8163..3c29abcb 100644
--- a/tests/web/test_response.py
+++ b/tests/web/test_response.py
@@ -39,7 +39,7 @@ def response():
 #     assert response.status == 200
 
 
-async def test_response_file_not_found(loop, tmpdir, response):
+async def test_response_file_not_found(tmpdir, response):
 
     filename = str(tmpdir / 'hello-not-found')
     with pytest.raises(HTTPNotFound):