diff --git a/caribou/data_collector/components/provider/provider_retriever.py b/caribou/data_collector/components/provider/provider_retriever.py
index dacf9ab9..cedea834 100644
--- a/caribou/data_collector/components/provider/provider_retriever.py
+++ b/caribou/data_collector/components/provider/provider_retriever.py
@@ -23,7 +23,10 @@ def __init__(self, client: RemoteClient) -> None:
         if self._google_api_key is None and not self._integration_test_on:
             raise ValueError("GOOGLE_API_KEY environment variable not set")
 
-        self._aws_ec2_client = boto3.client("ec2")  # Should be available in most if not all regions
+        # Should be available in most if not all regions
+        # But just to be sure, we use us-east-1 (As we know it's available there)
+        self._aws_ec2_client = boto3.client("ec2", region_name="us-east-1")
+
         self._aws_pricing_client = boto3.client("pricing", region_name="us-east-1")  # Must be in us-east-1
         self._aws_region_name_to_code: dict[str, str] = {}
 
diff --git a/caribou/tests/data_collector/components/provider/test_provider_retriever.py b/caribou/tests/data_collector/components/provider/test_provider_retriever.py
index 1a940646..9608b8b3 100644
--- a/caribou/tests/data_collector/components/provider/test_provider_retriever.py
+++ b/caribou/tests/data_collector/components/provider/test_provider_retriever.py
@@ -799,6 +799,7 @@ def test_get_aws_product_skus_empty_json(self):
     @patch("caribou.data_collector.components.provider.provider_retriever.boto3.client")
     def test_retrieve_enabled_aws_regions_success(self, mock_boto3_client):
         mock_ec2_client = MagicMock()
+
         mock_boto3_client.return_value = mock_ec2_client
 
         mock_ec2_client.describe_regions.return_value = {
@@ -809,7 +810,13 @@ def test_retrieve_enabled_aws_regions_success(self, mock_boto3_client):
             ]
         }
 
-        provider_retriever = ProviderRetriever(client=mock_boto3_client)
+        with patch("os.environ.get") as mock_os_environ_get, patch(
+            "caribou.common.utils.str_to_bool"
+        ) as mock_str_to_bool:
+            mock_os_environ_get.return_value = "test_key"
+            mock_str_to_bool.return_value = False
+            provider_retriever = ProviderRetriever(client=mock_boto3_client)
+
         expected_regions = ["us-east-1", "us-west-2", "eu-west-1"]
 
         actual_regions = provider_retriever._retrieve_enabled_aws_regions()
@@ -822,7 +829,13 @@ def test_retrieve_enabled_aws_regions_empty(self, mock_boto3_client):
 
         mock_ec2_client.describe_regions.return_value = {"Regions": []}
 
-        provider_retriever = ProviderRetriever(client=mock_boto3_client)
+        with patch("os.environ.get") as mock_os_environ_get, patch(
+            "caribou.common.utils.str_to_bool"
+        ) as mock_str_to_bool:
+            mock_os_environ_get.return_value = "test_key"
+            mock_str_to_bool.return_value = False
+            provider_retriever = ProviderRetriever(client=mock_boto3_client)
+
         expected_regions = []
 
         actual_regions = provider_retriever._retrieve_enabled_aws_regions()
@@ -835,7 +848,12 @@ def test_retrieve_enabled_aws_regions_api_failure(self, mock_boto3_client):
 
         mock_ec2_client.describe_regions.side_effect = Exception("AWS API error")
 
-        provider_retriever = ProviderRetriever(client=mock_boto3_client)
+        with patch("os.environ.get") as mock_os_environ_get, patch(
+            "caribou.common.utils.str_to_bool"
+        ) as mock_str_to_bool:
+            mock_os_environ_get.return_value = "test_key"
+            mock_str_to_bool.return_value = False
+            provider_retriever = ProviderRetriever(client=mock_boto3_client)
 
         with self.assertRaises(Exception) as context:
             provider_retriever._retrieve_enabled_aws_regions()