diff --git a/package.json b/package.json
index 9613741..f5bdf54 100644
--- a/package.json
+++ b/package.json
@@ -18,8 +18,8 @@
     "magic-string": "^0.24.0"
   },
   "devDependencies": {
-    "coffeescript": "^2.3.0",
-    "testpass": "^0.8.1",
+    "coffeescript": "2.4.1",
+    "testpass": "0.8.3",
     "wch-coffee": "*"
   },
   "engines": {
diff --git a/renovate.json b/renovate.json
new file mode 100644
index 0000000..f45d8f1
--- /dev/null
+++ b/renovate.json
@@ -0,0 +1,5 @@
+{
+  "extends": [
+    "config:base"
+  ]
+}