diff --git a/requirements.txt b/requirements.txt
index 3ec25922..3ba35c92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
 setuptools-rust
 jinja2
-boto3
-boto3_type_annotations
-botocore
+boto3==1.20.45
+botocore==1.23.45
+boto3_type_annotations==0.3.1
 click
 requests
 ruamel.yaml
diff --git a/tests/base.py b/tests/base.py
index 88eeeba8..011a5b0f 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -26,6 +26,7 @@
 from charon.storage import PRODUCT_META_KEY, CHECKSUM_META_KEY
 from tests.commons import TEST_BUCKET
 from boto3_type_annotations import s3
+from moto import mock_s3
 
 
 SHORT_TEST_PREFIX = "ga"
@@ -82,6 +83,7 @@ def get_config_base(self) -> str:
         return os.path.join(self.get_temp_dir(), '.charon')
 
 
+@mock_s3
 class PackageBaseTest(BaseTest):
     def setUp(self):
         super().setUp()
diff --git a/tests/requirements.txt b/tests/requirements.txt
index 55d4ddd3..de68f7b1 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -5,5 +5,5 @@ pytest-cov
 pytest-html
 flake8
 requests-mock
-moto
+moto==3.0.2.dev12