diff --git a/CHANGELOG.md b/CHANGELOG.md
index d98f22d..ca9ae6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,13 +5,15 @@
 ### 1.6.0
 
 #### Features:
-- Added support for [`dbt-core version 1.6.0`](https://github.com/dbt-labs/dbt-core/discussions/7958) according to DBT guidelines. 
-- new `clone` command
-- Droped support for Python 3.7 
+- Added support for [`dbt-core version 1.6.0`](https://github.com/dbt-labs/dbt-core/discussions/7958) according to DBT guidelines.
+- Added support of oAuth authentication.
+- New `clone` command.
+- Droped support for Python 3.7. 
 
 #### Fixes:
-- ensure support for revamped `dbt debug`
-- new limit arg for `adapter.execute()`
+- Ensure support for revamped `dbt debug`.
+- New limit arg for `adapter.execute()`
+- Configuring composite unique key for incremental merge or insert+update strategy
 - Added new functional tests and parameterize them by overriding fixtures:
   - TestIncrementalConstraintsRollback 
   - TestTableContractSqlHeader 
diff --git a/README.md b/README.md
index c79d19f..a4dee00 100644
--- a/README.md
+++ b/README.md
@@ -10,11 +10,11 @@ For more information on using dbt with Vertica, consult the [Vertica-Setup](http
 
 ## dbt-vertica Versions Tested 
 dbt-vertica has been developed using the following software and versions: 
-* Vertica Server 12.0.3-0
+* Vertica Server 23.4.0-0
 * Python 3.11
 * vertica-python client 1.3.1
-* dbt-core 1.5.0
-* dbt-tests-adapter 1.5.0
+* dbt-core 1.6.0
+* dbt-tests-adapter 1.6.0
 
 ## Supported Features
 ### dbt Core Features
@@ -56,6 +56,7 @@ your-profile:
       username: [your username] 
       password: [your password] 
       database: [database name] 
+      oauth_access_token: [access token]
       schema: [dbt schema] 
       connection_load_balance: True
       backup_server_node: [list of backup hostnames or IPs]
@@ -74,6 +75,7 @@ your-profile:
 | username | The username to use to connect to the server. | Yes | None	| dbadmin |
 | password | The password to use for authenticating to the server. | Yes | None | my_password |
 | database | The name of the database running on the server. | Yes | None | my_db |
+| oauth_access_token | To authenticate via OAuth, provide an OAuth Access Token that authorizes a user to the database. | No | "" | Default: "" |
 | schema | The schema to build models into. | No | None | VMart |
 | connection_load_balance | A Boolean value that indicates whether the connection can be redirected to a host in the database other than host. | No | true | true |
 | backup_server_node | List of hosts to connect to if the primary host specified in the connection (host, port) is unreachable. Each item in the list should be either a host string (using default port 5433) or a (host, port) tuple. A host can be a host name or an IP address. | No | none | ['123.123.123.123','www.abc.com',('123.123.123.124',5433)]
diff --git a/dbt/adapters/vertica/connections.py b/dbt/adapters/vertica/connections.py
index 77d4b36..1bea228 100644
--- a/dbt/adapters/vertica/connections.py
+++ b/dbt/adapters/vertica/connections.py
@@ -46,6 +46,7 @@ class verticaCredentials(Credentials):
     ssl: bool = False
     port: int = 5433
     timeout: int = 3600
+    oauth_access_token: str = ""
     withMaterialization: bool = False
     ssl_env_cafile: Optional[str] = None
     ssl_uri: Optional[str] = None
@@ -97,7 +98,7 @@ def open(cls, connection):
                 'connection_load_balance':credentials.connection_load_balance,
                 'session_label': f'dbt_{credentials.username}',
                 'retries': credentials.retries,
-              
+                'oauth_access_token': credentials.oauth_access_token,
                 'backup_server_node':credentials.backup_server_node,
                 
             }
diff --git a/dbt/include/vertica/profile_template.yml b/dbt/include/vertica/profile_template.yml
index e970ac2..7868659 100644
--- a/dbt/include/vertica/profile_template.yml
+++ b/dbt/include/vertica/profile_template.yml
@@ -8,6 +8,9 @@ prompts:
     type: 'int'
   username:
     hint: 'dev username'
+  oauth_access_token:
+    hint: 'access token'
+    default: ''
   password:
     hint: 'dev password'
     hide_input: true
diff --git a/dbt/include/vertica/sample_profiles.yml b/dbt/include/vertica/sample_profiles.yml
index e230312..38e5267 100644
--- a/dbt/include/vertica/sample_profiles.yml
+++ b/dbt/include/vertica/sample_profiles.yml
@@ -7,6 +7,7 @@ default:
       username: [dev_username]
       password: [dev_password]
       database: [dbname]
+      oauth_access_token: [access token]
       schema: [dev_schema]
       threads: [1 or more]
       connection_load_balance: [True or False]
@@ -19,6 +20,7 @@ default:
       username: [prod_username]
       password: [prod_password]
       database: [dbname]
+      oauth_access_token: [access token]
       schema: [prod_schema]
       threads: [1 or more]
       connection_load_balance: [True or False]