diff --git a/README.md b/README.md
index e66db3c..253a811 100644
--- a/README.md
+++ b/README.md
@@ -289,7 +289,13 @@ These are the available config options for making requests. Only the `url` is re
 
   // `maxRedirects` defines the maximum number of redirects to follow in node.js.
   // If set to 0, no redirects will be followed.
-  maxRedirects: 5 // default
+  maxRedirects: 5, // default
+
+  // `httpAgent` and `httpsAgent` define a custom agent to be used when performing http
+  // and https requests, respectively, in node.js. This allows to configure options like
+  // `keepAlive` that are not enabled by default.
+  httpAgent: new http.Agent({ keepAlive: true }),
+  httpsAgent: new https.Agent({ keepAlive: true })
 }
 ```