diff --git a/pyproject.toml b/pyproject.toml
index 58b47af..91ce07b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,13 +8,13 @@ keywords = ["AWS", "EC2", "command line", "cli"]
 classifiers = ["License :: OSI Approved :: MIT License"]
 requires-python = ">=3.8"
 dependencies = [
-    "boto3==1.34.19",
-    "importlib_resources==6.1.1",
+    "boto3==1.34.59",
+    "importlib_resources==6.1.3",
     "pytoml==0.1.21",
-    "pytz==2023.3.post1",
+    "pytz==2024.1",
     "requests==2.31.0",
-    "rich==13.7.0",
-    "typing_extensions==4.9.0",
+    "rich==13.7.1",
+    "typing_extensions==4.10.0",
 ]
 
 [project.optional-dependencies]
@@ -23,12 +23,12 @@ dev = [
     "boto3-stubs[ec2,compute-optimizer,ssm,s3]",
     "cogapp~=3.3",
     "dirty-equals~=0.6",
-    "moto[ec2]~=4.2.13",
+    "moto[ec2]~=5.0.2",
     "pre-commit~=3.5",
     "pyfakefs~=5.1",
-    "pytest~=7.4",
+    "pytest~=8.0",
     "pytest-mock~=3.11",
-    "twine~=4.0",
+    "twine~=5.0",
 ]
 
 [project.scripts]
diff --git a/src/aec/util/docgen.py b/src/aec/util/docgen.py
index 037a8d7..8b24249 100644
--- a/src/aec/util/docgen.py
+++ b/src/aec/util/docgen.py
@@ -4,7 +4,7 @@
 from contextlib import redirect_stdout
 from typing import Any, Iterator
 
-from moto import mock_ec2
+from moto import mock_aws
 from moto.ec2.models import ec2_backends
 from moto.ec2.models.amis import AMIS
 
@@ -13,7 +13,7 @@
 from aec.util.config import Config
 
 # fixtures
-mock_ec2().start()
+mock_aws().start()
 region = "us-east-1"
 mock_aws_config: Config = {
     "region": region,
diff --git a/tests/conftest.py b/tests/conftest.py
index fbba781..acbc399 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,6 +1,10 @@
 import os
 
 import pytest
+from moto import mock_aws
+from moto.core.models import DEFAULT_ACCOUNT_ID
+from moto.ec2.models import ec2_backends
+from moto.ssm.models import ssm_backends
 
 
 @pytest.fixture(scope="session", autouse=True)
@@ -11,3 +15,23 @@ def aws_credentials():
     # RuntimeError: Credentials were refreshed, but the refreshed credentials are still expired.
     if "AWS_CREDENTIAL_EXPIRATION" in os.environ:
         del os.environ["AWS_CREDENTIAL_EXPIRATION"]
+
+
+@pytest.fixture(scope="session")
+def _mock_aws():
+    with mock_aws():
+        yield
+
+
+@pytest.fixture
+def _mock_ec2(_mock_aws: None):
+    yield
+    # reset just the ec2 backend because its quicker than resetting all backends
+    ec2_backends[DEFAULT_ACCOUNT_ID].reset()
+
+
+@pytest.fixture
+def _mock_ssm(_mock_aws: None):
+    yield
+    # reset just the ssm backend because its quicker than resetting all backends
+    ssm_backends[DEFAULT_ACCOUNT_ID].reset()
diff --git a/tests/test_ami.py b/tests/test_ami.py
index 363a450..e5ad83d 100644
--- a/tests/test_ami.py
+++ b/tests/test_ami.py
@@ -2,7 +2,6 @@
 
 import boto3
 import pytest
-from moto import mock_ec2
 from moto.ec2.models.amis import AMIS
 from mypy_boto3_ec2 import EC2Client
 from mypy_boto3_ec2.type_defs import TagTypeDef
@@ -12,10 +11,7 @@
 
 
 @pytest.fixture
-def mock_aws_config() -> Config:
-    mock = mock_ec2()
-    mock.start()
-
+def mock_aws_config(_mock_ec2: None) -> Config:
     return {
         "region": "ap-southeast-2",
     }
diff --git a/tests/test_compute_optimizer.py b/tests/test_compute_optimizer.py
index 13847ff..ae24bc1 100644
--- a/tests/test_compute_optimizer.py
+++ b/tests/test_compute_optimizer.py
@@ -1,5 +1,5 @@
 import pytest
-from moto import mock_ec2
+from moto.core.models import DEFAULT_ACCOUNT_ID
 from moto.ec2.models import ec2_backends
 from moto.ec2.models.amis import AMIS
 
@@ -9,9 +9,7 @@
 
 
 @pytest.fixture
-def mock_aws_config():
-    mock = mock_ec2()
-    mock.start()
+def mock_aws_config(_mock_ec2: None) -> Config:
     region = "us-east-1"
 
     return {
@@ -20,7 +18,7 @@ def mock_aws_config():
         "key_name": "test_key",
         "vpc": {
             "name": "test vpc",
-            "subnet": ec2_backends["123456789012"]["us-east-1"].get_default_subnet("us-east-1a").id,
+            "subnet": ec2_backends[DEFAULT_ACCOUNT_ID][region].get_default_subnet("us-east-1a").id,
             "security_group": "default",
         },
     }
diff --git a/tests/test_ec2.py b/tests/test_ec2.py
index 9e650be..c316434 100644
--- a/tests/test_ec2.py
+++ b/tests/test_ec2.py
@@ -6,7 +6,7 @@
 import boto3
 import pytest
 from dirty_equals import IsDatetime
-from moto import mock_ec2, mock_iam
+from moto.core.models import DEFAULT_ACCOUNT_ID
 from moto.ec2.models import ec2_backends
 from moto.ec2.models.amis import AMIS
 from mypy_boto3_ec2.type_defs import TagTypeDef
@@ -33,9 +33,7 @@
 
 
 @pytest.fixture
-def mock_aws_config() -> Config:
-    mock = mock_ec2()
-    mock.start()
+def mock_aws_config(_mock_ec2: None) -> Config:
     region = "us-east-1"
 
     return {
@@ -43,7 +41,7 @@ def mock_aws_config() -> Config:
         "key_name": "test_key",
         "vpc": {
             "name": "test vpc",
-            "subnet": ec2_backends["123456789012"]["us-east-1"].get_default_subnet("us-east-1a").id,
+            "subnet": ec2_backends[DEFAULT_ACCOUNT_ID][region].get_default_subnet("us-east-1a").id,
             "security_group": "default",
         },
     }
@@ -96,7 +94,6 @@ def test_launch_multiple_security_groups(mock_aws_config: Config):
     print(launch(mock_aws_config, "alice", ami_id))
 
 
-@mock_iam
 def test_launch_with_instance_profile(mock_aws_config: Config):
     iam = boto3.client("iam", "us-east-1")
 
diff --git a/tests/test_ssm.py b/tests/test_ssm.py
index 65b4f8c..def1456 100644
--- a/tests/test_ssm.py
+++ b/tests/test_ssm.py
@@ -4,7 +4,6 @@
 
 import boto3
 import pytest
-from moto import mock_ec2, mock_ssm
 from moto.ec2.models.amis import AMIS
 from mypy_boto3_ec2 import EC2Client
 from pytest import MonkeyPatch
@@ -17,10 +16,7 @@
 
 
 @pytest.fixture
-def mock_aws_config():
-    mock_ec2().start()
-    mock_ssm().start()
-
+def mock_aws_config(_mock_ec2: None, _mock_ssm: None):
     return {
         "region": "ap-southeast-2",
     }