diff --git a/ibm_cloud_sdk_core/http_adapter.py b/ibm_cloud_sdk_core/http_adapter.py
index 30f73f9..11ac825 100644
--- a/ibm_cloud_sdk_core/http_adapter.py
+++ b/ibm_cloud_sdk_core/http_adapter.py
@@ -17,6 +17,7 @@ def init_poolmanager(self, connections, maxsize, block=DEFAULT_POOLBLOCK, **pool
         """Create and use custom SSL configuration."""
 
         ssl_context = create_urllib3_context()
+        ssl_context.load_default_certs()
         ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
 
         if self._disable_ssl_verification: