diff --git a/README.md b/README.md
index 7dc7939..0c848e1 100644
--- a/README.md
+++ b/README.md
@@ -14,16 +14,16 @@ $ pip install dbt-presto
 
 A dbt profile can be configured to run against Presto using the following configuration:
 
-| Option  | Description                                        | Required?               | Example                  |
-|---------|----------------------------------------------------|-------------------------|--------------------------|
-| method  | The Presto authentication method to use | Optional (default=`none`)  | `none`|`kerberos` |
-| user  | Username for authentication | Required  | `none`|`drew` |
-| password  | Password for authentication | Optional (required if `method` is `ldap|kerberos`)  | `none`|`abc123` |
-| database  | Specify the database to build models into | Required  | `analytics` |
-| schema  | Specify the schema to build models into | Required | `dbt_drew` |
-| host    | The hostname to connect to | Required | `127.0.0.1`  |
-| port    | The port to connect to the host on | Required | `8080` |
-| threads    | How many threads dbt should use | Optional(default=`1`) | `8` |
+| Option   | Description                               | Required?                                          | Example            |
+| -------- | ----------------------------------------- | -------------------------------------------------- | ------------------ |
+| method   | The Presto authentication method to use   | Optional (default=`none`)                          | `none`\|`kerberos` |
+| user     | Username for authentication               | Required                                           | `drew`             |
+| password | Password for authentication               | Optional (required if `method` is `ldap|kerberos`) | `none`\|`abc123`   |
+| database | Specify the database to build models into | Required                                           | `analytics`        |
+| schema   | Specify the schema to build models into   | Required                                           | `dbt_drew`         |
+| host     | The hostname to connect to                | Required                                           | `127.0.0.1`        |
+| port     | The port to connect to the host on        | Required                                           | `8080`             |
+| threads  | How many threads dbt should use           | Optional(default=`1`)                              | `8`                |
 
 
 
diff --git a/dbt/adapters/presto/connections.py b/dbt/adapters/presto/connections.py
index 3d7fc82..b36b333 100644
--- a/dbt/adapters/presto/connections.py
+++ b/dbt/adapters/presto/connections.py
@@ -22,8 +22,8 @@ class PrestoCredentials(Credentials):
     host: str
     port: Port
     user: str
-    password: Optional[str]
-    method: Optional[str]
+    password: Optional[str] = None
+    method: Optional[str] = None
     _ALIASES = {
         'catalog': 'database'
     }