diff --git a/README.md b/README.md
index f40c309b..eee42246 100644
--- a/README.md
+++ b/README.md
@@ -2591,6 +2591,17 @@ import {
 parseDsn('postgresql://foo@localhost/bar?application_name=baz');
 ```
 
+Supported parameters:
+
+|Name|Meaning|Default|
+|---|---|---|
+|`application_name`|[`application_name`](https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-APPLICATION-NAME)||
+|`options`|[`options`](https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-OPTIONS)||
+|`sslcert`|The location of the [certificate](https://www.postgresql.org/docs/current/libpq-ssl.html#LIBPQ-SSL-CLIENTCERT).|-|
+|`sslkey`|The location of the [certificate](https://www.postgresql.org/docs/current/libpq-ssl.html#LIBPQ-SSL-CLIENTCERT).|-|
+|`sslmode`|[`sslmode`](https://www.postgresql.org/docs/current/libpq-ssl.html#LIBPQ-SSL-PROTECTION) (supported values: `disable`, `no-verify`, `require`)|`disable`|
+|`sslrootcert`|The location of the [root certificate]((https://www.postgresql.org/docs/current/libpq-ssl.html#LIBQ-SSL-CERTIFICATES)) file.||
+
 ### <code>stringifyDsn</code>
 
 ```ts
diff --git a/packages/utilities/src/utilities/parseDsn.ts b/packages/utilities/src/utilities/parseDsn.ts
index 0d186049..a446b97a 100644
--- a/packages/utilities/src/utilities/parseDsn.ts
+++ b/packages/utilities/src/utilities/parseDsn.ts
@@ -56,7 +56,10 @@ export const parseDsn = (dsn: string): ConnectionOptions => {
         .describe(
           'Specifies the location for the secret key used for the client certificate.',
         ),
-      sslmode: z.enum(['disable', 'no-verify', 'require']).optional(),
+      sslmode: z
+        .enum(['disable', 'no-verify', 'require'])
+        .optional()
+        .default('disable'),
       sslrootcert: z
         .string()
         .optional()