diff --git a/README.md b/README.md
index 476d34a..1aab5f3 100755
--- a/README.md
+++ b/README.md
@@ -639,6 +639,9 @@ axios.post('http://something.com/', querystring.stringify({ foo: 'bar' }));
 
 You can also use the [`qs`](https://github.com/ljharb/qs) library.
 
+###### NOTE
+The `qs` library is preferable if you need to stringify nested objects, as the `querystring` method has known issues with that use case (https://github.com/nodejs/node-v0.x-archive/issues/1665).
+
 ## Semver
 
 Until axios reaches a `1.0` release, breaking changes will be released with a new minor version. For example `0.5.1`, and `0.5.4` will have the same API, but `0.6.0` will have breaking changes.