Updating required docker version for docker plugin
@@ -40,7 +40,7 @@ The [`docker-collectd`](https://github.com/signalfx/docker-collectd-plugin) plug
|----------|--------------|
| collectd | 5.0 or later |
| Python | 2.6 or later |
-| Docker | 1.5 or later |
+| Docker | 1.9 or later |
| Python plugin for collectd | (included with [SignalFx collectd agent](https://github.com/signalfx/integrations/tree/master/collectd)[](sfx_link:sfxcollectd)) |
