diff --git a/README.md b/README.md
old mode 100755
new mode 100644
index 1885f44..3f96e72
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # ensure-function
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/Qard/ensure-function.svg)](https://greenkeeper.io/)
+
 Transform JS function code, function bodies, modules, or files into valid functions using AST transform and VM wizardry.
 
 ## Install
diff --git a/package.json b/package.json
index 68efa7e..7d4be35 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "transform"
   ],
   "dependencies": {
-    "recast": "^0.16.1"
+    "recast": "^0.17.5"
   },
   "devDependencies": {
     "codecov": "^3.2.0",