diff --git a/pycaprio/core/adapters/http_adapter.py b/pycaprio/core/adapters/http_adapter.py
index ee8fd83..fa47d51 100644
--- a/pycaprio/core/adapters/http_adapter.py
+++ b/pycaprio/core/adapters/http_adapter.py
@@ -1,6 +1,4 @@
-from typing import IO, Union
-from typing import List
-from typing import Optional
+from typing import IO, Union, List, Optional
 
 from pycaprio.core.clients.retryable_client import RetryableInceptionClient
 from pycaprio.core.interfaces.adapter import BaseInceptionAdapter
@@ -30,8 +28,12 @@ def __init__(
         inception_host: str,
         authentication: authentication_type,
         inception_client: Optional[BaseInceptionClient] = None,
+        ca_bundle: Optional[str] = None,
+        verify: Union[bool, str] = True,
     ):
-        self.client = inception_client or RetryableInceptionClient(inception_host, authentication)
+        self.client = inception_client or RetryableInceptionClient(
+            inception_host, authentication, ca_bundle=ca_bundle, verify=verify
+        )
         self.default_username, _ = authentication
 
     def projects(self) -> List[Project]:
diff --git a/pycaprio/core/clients/retryable_client.py b/pycaprio/core/clients/retryable_client.py
index d8a8259..576e2a1 100644
--- a/pycaprio/core/clients/retryable_client.py
+++ b/pycaprio/core/clients/retryable_client.py
@@ -1,8 +1,11 @@
 import io
+import os
 import time
-from typing import Optional
+from typing import Optional, Union
 
 import requests
+from requests.adapters import HTTPAdapter
+from urllib3.util.ssl_ import create_urllib3_context
 from requests_toolbelt import MultipartEncoder
 
 from pycaprio.core.exceptions import InceptionBadResponse
@@ -10,6 +13,27 @@
 from pycaprio.core.interfaces.types import authentication_type
 
 
+class SSLAdapter(HTTPAdapter):
+    """
+    Custom HTTPAdapter that allows merging custom CA certificates with the system default certificates.
+    This enables trusting both system CAs and custom/self-signed certificates.
+    """
+
+    def __init__(self, ca_bundle: Optional[str] = None, **kwargs):
+        self.ca_bundle = ca_bundle
+        super().__init__(**kwargs)
+
+    def init_poolmanager(self, *args, **kwargs):
+        """Initialize pool manager with custom SSL context that includes custom CA certificates."""
+        if self.ca_bundle:
+            # Create a default SSL context
+            ctx = create_urllib3_context()
+            # Load both system CAs and custom CAs
+            ctx.load_verify_locations(cafile=self.ca_bundle)
+            kwargs["ssl_context"] = ctx
+        return super().init_poolmanager(*args, **kwargs)
+
+
 class RetryableInceptionClient(BaseInceptionClient):
     """
     HTTP client which implements retrying with exponential backoff.
@@ -18,13 +42,33 @@ class RetryableInceptionClient(BaseInceptionClient):
 
     RETRY_STATUSES = (408, 502, 503, 504)
 
-    def __init__(self, inception_host: str, authentication: authentication_type, max_retries=3):
+    def __init__(
+        self,
+        inception_host: str,
+        authentication: authentication_type,
+        max_retries: int = 3,
+        ca_bundle: Optional[str] = None,
+        verify: bool = True,
+    ):
         super().__init__(inception_host, authentication)
         self.session = requests.Session()
         self.session.auth = authentication
         assert 0 < max_retries, "max_retries must be greater than 0"
         self.max_retries = max_retries
 
+        if verify is True:
+            # If verify is True, use the SSLAdapter
+            self.session.verify = True
+        else:
+            # If verify is False, disable verification
+            self.session.verify = False
+
+        # Mount custom SSL adapter if we have a custom CA bundle
+        if ca_bundle and verify is not False:
+            adapter = SSLAdapter(ca_bundle=ca_bundle)
+            self.session.mount("https://", adapter)
+            self.session.mount("http://", adapter)
+
     def get(self, url: str, params: Optional[dict] = None) -> requests.Response:
         return self.request("get", url, params=params)
 
diff --git a/pycaprio/core/pycaprio.py b/pycaprio/core/pycaprio.py
index f1eb25d..82567a5 100644
--- a/pycaprio/core/pycaprio.py
+++ b/pycaprio/core/pycaprio.py
@@ -1,5 +1,5 @@
 import os
-from typing import Optional
+from typing import Optional, Union
 
 from pycaprio.core.adapters.http_adapter import HttpInceptionAdapter
 from pycaprio.core.exceptions import ConfigurationNotProvided
@@ -17,6 +17,8 @@ def __init__(
         inception_host: Optional[str] = None,
         authentication: Optional[authentication_type] = None,
         local_projects_dir: Optional[str] = None,
+        ca_bundle: Optional[str] = None,
+        verify: Union[bool, str] = True,
     ):
         """
         Initializes Pycaprio in either remote or local mode.
@@ -24,6 +26,11 @@ def __init__(
         :param inception_host: Hostname of the INCEpTION instance.
         :param authentication: Tuple of username and password for INCEpTION instance.
         :param local_projects_dir: Directory containing exported INCEpTION projects in ZIP format.
+        :param ca_bundle: Path to a custom CA certificate file to trust.
+                         This is the recommended way to support self-signed certificates.
+        :param verify: Controls SSL verification behavior:
+                      - True (default): Verify SSL certificates using system CAs + ca_bundle if provided
+                      - False: Disable SSL verification (not recommended for production)
         """
         inception_host = inception_host or os.getenv("INCEPTION_HOST")
         if inception_host:
@@ -33,8 +40,8 @@ def __init__(
                     "Authentication was not provided. "
                     "You can set it via environment variables as 'INCEPTION_USERNAME' and 'INCEPTION_PASSWORD'"
                 )
-            
-            self.api = HttpInceptionAdapter(inception_host, authentication)
+
+            self.api = HttpInceptionAdapter(inception_host, authentication, ca_bundle=ca_bundle, verify=verify)
         elif local_projects_dir:
             self.api = LocalInceptionAdapter(local_projects_dir)
         else: