diff --git a/README.md b/README.md
index a4a603a..a25f377 100644
--- a/README.md
+++ b/README.md
@@ -2,21 +2,24 @@
 
 A PHP library for fetching data from the Australian Bureau of Meteorology API.
 
-[![CircleCI](https://circleci.com/gh/previousnext/bom-weather.svg?style=svg)](https://circleci.com/gh/previousnext/bom-weather)
-
-
 ## Installation
 
 ```
 composer require previousnext/bom-weather
 ```
 
+The library requires a PSR-18 HTTP client and PSR-17 HTTP factories. We recommend using [Guzzle](https://docs.guzzlephp.org/en/stable/).
+
 ## Usage
 
+```php
+
 ### Forecasts
 
 ```php
-$client = new BomClient(new Client(), new RequestFactory(), new NullLogger());
+$httpClient = new GuzzleHttp\Client(['base_uri' => 'http://www.bom.gov.au/']);
+$requestFactory = new Http\Factory\Guzzle\RequestFactory();
+$client = new BomClient($httpClient, $requestFactory, new NullLogger());
 $forecast = $client->getForecast('IDN10031');
 
 $issueTime = $forecast->getIssueTime();
@@ -45,7 +48,9 @@ foreach ($locations as $location) {
 ### Observations
 
 ```php
-$client = new BomClient(new Client(), new RequestFactory(), new NullLogger());
+$httpClient = new GuzzleHttp\Client(['base_uri' => 'http://www.bom.gov.au/']);
+$requestFactory = new Http\Factory\Guzzle\RequestFactory();
+$client = new BomClient($httpClient, $requestFactory, new NullLogger());
 $observationList = $client->getObservationList('IDN60901', '95757');
 
 $refreshMessage = $observationList->getRefreshMessage();
@@ -78,13 +83,19 @@ $meanSeaLevel = $pressure->getMeanSeaLevel();
 
 ## Developing
 
-PHP CodeSniffer
+**PHP CodeSniffer**
 ```
 ./bin/phpcs
 ```
 
-PHPUnit
+**PHPUnit**
 
 ```
 ./bin/phpunit
 ```
+
+**PHPStan**
+
+```
+./bin/phpstan
+```
diff --git a/src/BomClient.php b/src/BomClient.php
index a704b2a..2950847 100644
--- a/src/BomClient.php
+++ b/src/BomClient.php
@@ -51,7 +51,7 @@ public function __construct(
    */
   public function getForecast(string $productId): ?Forecast {
     try {
-      $request = $this->requestFactory->createRequest('GET', "http://www.bom.gov.au/fwo/$productId.xml")
+      $request = $this->requestFactory->createRequest('GET', "fwo/$productId.xml")
         ->withHeader('Accept-Encoding', 'gzip');
       $response = $this->httpClient->sendRequest($request);
 
@@ -80,7 +80,7 @@ public function getForecast(string $productId): ?Forecast {
    */
   public function getObservationList(string $productId, string $wmo): ?ObservationList {
     try {
-      $request = $this->requestFactory->createRequest('GET', "http://reg.bom.gov.au/fwo/$productId/$productId.$wmo.json")
+      $request = $this->requestFactory->createRequest('GET', "fwo/$productId/$productId.$wmo.json")
         ->withHeader('Accept-Encoding', 'gzip');
       $response = $this->httpClient->sendRequest($request);