diff --git a/package-lock.json b/package-lock.json
index 540faa5..fb2a019 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,12 +4,33 @@
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@@ -79,9 +85,9 @@
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@@ -96,9 +102,9 @@
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@@ -215,6 +232,12 @@
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-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+    "yallist": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
     }
   }
diff --git a/package.json b/package.json
index e171b1b..22a1a5f 100644
--- a/package.json
+++ b/package.json
@@ -5,13 +5,13 @@
   "module": "dist/rollup-plugin-json.es.js",
   "jsnext:main": "dist/rollup-plugin-json.es.js",
   "devDependencies": {
-    "eslint": "^3.4.0",
-    "eslint-plugin-import": "^2.2.0",
-    "mocha": "^3.0.2",
-    "rollup": "^0.41.6",
-    "rollup-plugin-buble": "^0.15.0",
-    "rollup-plugin-node-resolve": "^3.0.0",
-    "source-map-support": "^0.4.2"
+    "eslint": "^4.19.1",
+    "eslint-plugin-import": "^2.11.0",
+    "mocha": "^5.1.1",
+    "rollup": "^0.58.2",
+    "rollup-plugin-buble": "^0.19.2",
+    "rollup-plugin-node-resolve": "^3.3.0",
+    "source-map-support": "^0.5.5"
   },
   "scripts": {
     "test": "mocha",
@@ -29,7 +29,7 @@
   "license": "MIT",
   "repository": "rollup/rollup-plugin-json",
   "dependencies": {
-    "rollup-pluginutils": "^2.0.1"
+    "rollup-pluginutils": "^2.1.1"
   },
   "peerDependencies": {
     "rollup": "< 0.59.0"
diff --git a/rollup.config.js b/rollup.config.js
index ac1919b..20119cf 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -1,16 +1,14 @@
 import buble from 'rollup-plugin-buble';
 
-const pkg = require( './package.json' );
-
-var external = Object.keys( pkg.dependencies );
+const pkg = require('./package.json');
+const external = Object.keys(pkg.dependencies);
 
 export default {
-	entry: 'src/index.js',
-	targets: [
-		{ dest: pkg.main, format: 'cjs' },
-		{ dest: pkg.module, format: 'es' }
+	input: 'src/index.js',
+	output: [
+		{ file: pkg.main, format: 'cjs', sourcemap: true },
+		{ file: pkg.module, format: 'es', sourcemap: true }
 	],
-	plugins: [ buble() ],
-	external: external,
-	sourceMap: true
+	plugins: [buble()],
+	external
 };
diff --git a/test/test.js b/test/test.js
index 00f88fa..4f7a06f 100644
--- a/test/test.js
+++ b/test/test.js
@@ -12,11 +12,12 @@ describe('rollup-plugin-json', () => {
 	it('converts json', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/basic/main.js',
+				input: 'samples/basic/main.js',
 				plugins: [json()]
 			})
-			.then(bundle => {
-				const fn = new Function('assert', bundle.generate({ format: 'cjs' }).code);
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
+				const fn = new Function('assert', code);
 				fn(assert);
 			});
 	});
@@ -24,11 +25,12 @@ describe('rollup-plugin-json', () => {
 	it('handles arrays', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/array/main.js',
+				input: 'samples/array/main.js',
 				plugins: [json()]
 			})
-			.then(bundle => {
-				const fn = new Function('assert', bundle.generate({ format: 'cjs' }).code);
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
+				const fn = new Function('assert', code);
 				fn(assert);
 			});
 	});
@@ -36,11 +38,12 @@ describe('rollup-plugin-json', () => {
 	it('handles literals', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/literal/main.js',
+				input: 'samples/literal/main.js',
 				plugins: [json()]
 			})
-			.then(bundle => {
-				const fn = new Function('assert', bundle.generate({ format: 'cjs' }).code);
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
+				const fn = new Function('assert', code);
 				fn(assert);
 			});
 	});
@@ -48,12 +51,11 @@ describe('rollup-plugin-json', () => {
 	it('generates named exports', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/named/main.js',
+				input: 'samples/named/main.js',
 				plugins: [json()]
 			})
-			.then(bundle => {
-				const code = bundle.generate({ format: 'cjs' }).code;
-
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
 				const exports = {};
 				const fn = new Function('exports', code);
 				fn(exports);
@@ -70,11 +72,12 @@ describe('rollup-plugin-json', () => {
 	it('resolves extensionless imports in conjunction with the node-resolve plugin', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/extensionless/main.js',
+				input: 'samples/extensionless/main.js',
 				plugins: [resolve({ extensions: ['.js', '.json'] }), json()]
 			})
-			.then(bundle => {
-				const fn = new Function('assert', bundle.generate({ format: 'cjs' }).code);
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
+				const fn = new Function('assert', code);
 				fn(assert);
 			});
 	});
@@ -82,11 +85,12 @@ describe('rollup-plugin-json', () => {
 	it('handles JSON objects with no valid keys (#19)', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/no-valid-keys/main.js',
+				input: 'samples/no-valid-keys/main.js',
 				plugins: [json()]
 			})
-			.then(bundle => {
-				const fn = new Function('assert', bundle.generate({ format: 'cjs' }).code);
+			.then(bundle => bundle.generate({ format: 'cjs' }))
+			.then(({code}) => {
+				const fn = new Function('assert', code);
 				fn(assert);
 			});
 	});
@@ -94,7 +98,7 @@ describe('rollup-plugin-json', () => {
 	it('handles garbage', () => {
 		return rollup
 			.rollup({
-				entry: 'samples/garbage/main.js',
+				input: 'samples/garbage/main.js',
 				plugins: [json()]
 			})
 			.then(() => {