diff --git a/README.md b/README.md
index 4333a92..b366e18 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ to _your_ definition of valid. See [how to use it](#usage).
       - [`parsers.integer(value: string): number`](#parsersintegervalue-string-number)
       - [`parsers.float(value: string): number`](#parsersfloatvalue-string-number)
       - [`parsers.email(value: string): string`](#parsersemailvalue-string-string)
-      - [`parsers.url(value: string): string`](#parsersurlvalue-string-string)
+      - [`parsers.url(value: string, opts?: any): string`](#parsersurlvalue-string-string)
       - [`parsers.ipAddress(value: string): string`](#parsersipaddressvalue-string-string)
       - [`parsers.port(value: string): number`](#parsersportvalue-string-number)
       - [`parsers.whitelist(whitelistedValues: string[]): Parser<string>`](#parserswhitelistwhitelistedvalues-string-parserstring)
@@ -177,10 +177,14 @@ Ensures the value is a float.
 
 Ensures the value is an email.
 
-#### `parsers.url(value: string): string`
+#### `parsers.url(value: string, opts: any): string`
 
 Ensures the value is a url.
 
+You can also pass the optional second argument `opts` which allows you to customise the validation rules.
+
+See the `isURL` method of validator.js for a list of the options: https://github.com/validatorjs/validator.js
+
 #### `parsers.ipAddress(value: string): string`
 
 Ensures the value is an IP address.
diff --git a/src/parsers.test.ts b/src/parsers.test.ts
index cdf3009..e0cc4c4 100644
--- a/src/parsers.test.ts
+++ b/src/parsers.test.ts
@@ -87,18 +87,33 @@ describe('parsers.email', () => {
 });
 
 describe('parsers.url', () => {
-  test('parses a url', () => {
-    const serializedValue = 'https://example.com';
-    const expectedValue = serializedValue;
-
-    expect(parsers.url(serializedValue)).toEqual(expectedValue);
-  });
-
-  test('throws when serialized value is not an email', () => {
-    const serializedValue = 'not_an_email';
-
-    expect(() => parsers.url(serializedValue)).toThrow();
-  });
+  test.each([
+    'https://example.com',
+    'https://withsubdomain.example.com',
+    'http://non-secure.example.com',
+    'https://withport.example.com:123',
+  ])('successfully parses the url: "%p"', (theUrl: string) => {
+    expect(parsers.url(theUrl)).toEqual(theUrl);
+  });
+
+  test.each([
+    // eslint-disable-next-line @typescript-eslint/naming-convention
+    ['https://nodot', { require_tld: false }],
+    // eslint-disable-next-line @typescript-eslint/naming-convention
+    ['notaproto://example.com', { require_valid_protocol: false }],
+  ])(
+    'successfully parses urls with different options: "%p", options: %j',
+    (theUrl: string, opts) => {
+      expect(parsers.url(theUrl, opts)).toEqual(theUrl);
+    },
+  );
+
+  test.each(['not_a_url', 'https://nodot', 'notaproto://example.com'])(
+    'throws when serialized value is not a url: "%p"',
+    (theUrl: string) => {
+      expect(() => parsers.url(theUrl)).toThrow(`value is not an URL`);
+    },
+  );
 });
 
 describe('parsers.ipAddress', () => {
diff --git a/src/parsers.ts b/src/parsers.ts
index 9ac65a8..1215d61 100644
--- a/src/parsers.ts
+++ b/src/parsers.ts
@@ -2,7 +2,10 @@ import validator from 'validator';
 
 import EnvironmentVariableError from './EnvironmentVariableError';
 
-export type Parser<TReturn = any> = (serializedValue: string) => TReturn;
+export type Parser<TReturn = any> = (
+  serializedValue: string,
+  opts?: any,
+) => TReturn;
 
 /**
  * Parses a string.
@@ -77,10 +80,10 @@ export const email: Parser<string> = (serializedValue) => {
 /**
  * Parses a URL.
  */
-export const url: Parser<string> = (serializedValue) => {
+export const url: Parser<string> = (serializedValue: string, opts?: any) => {
   const value = serializedValue;
 
-  if (!validator.isURL(value)) {
+  if (!validator.isURL(value, opts)) {
     throw new EnvironmentVariableError('value is not an URL');
   }