diff --git a/README.md b/README.md
index d6f639d..d7d3f21 100644
--- a/README.md
+++ b/README.md
@@ -93,3 +93,11 @@ Usage:
     $dir = PhantomInstaller\PhantomBinary::getDir();
 
 This feature is similar to `location.js` of the [phantomjs module](https://github.com/Medium/phantomjs/blob/master/install.js#L93) for Node.
+
+## Automatic version lowering on 404
+
+In case downloading an archive fails with HttpStatusCode 404 (resource not found),
+the downloader will automatically lower the version to the next available version
+and retry. The number of retries is determined by the number of hardcoded PhantomJS
+versions in `getPhantomJSVersions()`. This feature was added, because of the problems
+with v2.0.0 not being available for all platforms (see issue #25).