diff --git a/lib/stream/slim.js b/lib/stream/slim.js
index 8123f0d6..08de6426 100644
--- a/lib/stream/slim.js
+++ b/lib/stream/slim.js
@@ -1,7 +1,6 @@
 var omit = require("lodash/omit");
 var through = require("through2");
 var assign = require("lodash/assign");
-var cloneDeep = require("lodash/cloneDeep");
 var slimGraph = require("../graph/slim_graph");
 
 /**