diff --git a/README.md b/README.md
index 817439c..05f7815 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,9 @@ n = nomad.Nomad(host="172.16.100.10", secure=True, timeout=5, verify=True, cert=
 # For HTTPS Nomad instances with cert file and key
 n = nomad.Nomad(host="https://172.16.100.10", secure=True, timeout=5, verify=True, cert=("/path/to/certfile", "/path/to/key")) # See http://docs.python-requests.org/en/master/user/advanced/#ssl-cert-verification
 
+# For HTTPS Nomad instance with cert file and key and CA file
+n = nomad.Nomad(host="https://172.16.100.10", secure=True, timeout=5, verify="/path/to/cacert", cert=("/path/to/certfile", "/path/to/key"))
+
 # For HTTPS Nomad instances with namespace and acl token
 n = nomad.Nomad(host="172.16.100.10", secure=True, timeout=5, verify=False, namespace='Namespace-example',token='3f4a0fcd-7c42-773c-25db-2d31ba0c05fe')
 
diff --git a/nomad/__init__.py b/nomad/__init__.py
index 406d2db..43437c5 100644
--- a/nomad/__init__.py
+++ b/nomad/__init__.py
@@ -1,7 +1,7 @@
 """Nomad Python library"""
 
 import os
-from typing import Optional
+from typing import Optional, Union
 
 import requests
 
@@ -25,7 +25,7 @@ def __init__(  # pylint: disable=too-many-arguments
         timeout: int = 5,
         region: Optional[str] = None,
         version: str = "v1",
-        verify: bool = False,
+        verify: Union[bool, str] = False,
         cert: tuple = (),
         session: requests.Session = None,
     ):
@@ -39,8 +39,8 @@ def __init__(  # pylint: disable=too-many-arguments
           - user_agent (defaults None), custom user agent for requests to Nomad.
           - secure (defaults False), define if the protocol is secured or not (https or http)
           - version (defaults v1), version of the api of nomad.
-          - verify (defaults False), verify the certificate when tls/ssl is enabled
-                              at nomad.
+          - verify (defaults False), verify SSL certificates for HTTPS requests. Can be a boolean to enable/disable
+                              verification, or a string path to a CA certificate file.
           - cert (defaults empty), cert, or key and cert file to validate the certificate
                               configured at nomad.
           - region (defaults None), version of the region to use. It will be used then
diff --git a/nomad/api/base.py b/nomad/api/base.py
index 209899b..ef340fe 100644
--- a/nomad/api/base.py
+++ b/nomad/api/base.py
@@ -1,6 +1,6 @@
 """Requester"""
 
-from typing import Optional
+from typing import Optional, Union
 
 import requests
 
@@ -24,7 +24,7 @@ def __init__(  # pylint: disable=too-many-arguments
         token: Optional[str] = None,
         timeout: int = 5,
         version: str = "v1",
-        verify: bool = False,
+        verify: Union[bool, str] = False,
         cert: tuple = (),
         region: Optional[str] = None,
         session: requests.Session = None,