diff --git a/package.json b/package.json
index 811dc4a..99c62bd 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "npm-run-all": "^4.1.2",
-    "rollup": "^0.64.1",
+    "rollup": "^0.65.0",
     "rollup-plugin-commonjs": "^9.1.6",
     "rollup-plugin-loadz0r": "^0.3.0",
     "rollup-plugin-node-resolve": "^3.3.0",
diff --git a/rollup/client.config.js b/rollup/client.config.js
index f76d7ce..638a93b 100644
--- a/rollup/client.config.js
+++ b/rollup/client.config.js
@@ -1,21 +1,17 @@
-import loadz0r from 'rollup-plugin-loadz0r';
 import resolve from 'rollup-plugin-node-resolve';
 import replace from 'rollup-plugin-replace';
 import commonjs from 'rollup-plugin-commonjs';
 import svelte from 'rollup-plugin-svelte';
 import { terser } from 'rollup-plugin-terser';
-import config from 'sapper/rollup.js';
-import pkg from '../package.json';
+import config from 'sapper/config/rollup.js';
 
 const mode = process.env.NODE_ENV;
 const dev = mode === 'development';
-const prod = !dev;
 
 export default {
 	input: config.client.input(),
 	output: config.client.output(),
 	plugins: [
-		loadz0r({ publicPath: 'client' }),
 		resolve(),
 		replace({
 			'process.browser': true,
@@ -27,10 +23,9 @@ export default {
 			hydratable: true
 		}),
 
-		prod && terser()
+		!dev && terser({
+			module: true
+		})
 	],
-	external: Object.keys(pkg.dependencies).concat(
-		require('module').builtinModules
-	),
 	experimentalCodeSplitting: true
 };
\ No newline at end of file
diff --git a/rollup/server.config.js b/rollup/server.config.js
index 5152870..4e7ff72 100644
--- a/rollup/server.config.js
+++ b/rollup/server.config.js
@@ -2,12 +2,11 @@ import resolve from 'rollup-plugin-node-resolve';
 import replace from 'rollup-plugin-replace';
 import commonjs from 'rollup-plugin-commonjs';
 import svelte from 'rollup-plugin-svelte';
-import config from 'sapper/rollup.js';
+import config from 'sapper/config/rollup.js';
 import pkg from '../package.json';
 
 const mode = process.env.NODE_ENV;
 const dev = mode === 'development';
-const prod = !dev;
 
 export default {
 	input: config.server.input(),
diff --git a/rollup/service-worker.config.js b/rollup/service-worker.config.js
index 143cdbb..ea21271 100644
--- a/rollup/service-worker.config.js
+++ b/rollup/service-worker.config.js
@@ -2,12 +2,10 @@ import resolve from 'rollup-plugin-node-resolve';
 import replace from 'rollup-plugin-replace';
 import commonjs from 'rollup-plugin-commonjs';
 import { terser } from 'rollup-plugin-terser';
-import config from 'sapper/rollup.js';
-import pkg from '../package.json';
+import config from 'sapper/config/rollup.js';
 
 const mode = process.env.NODE_ENV;
 const dev = mode === 'development';
-const prod = !dev;
 
 export default {
 	input: config.serviceworker.input(),
@@ -19,10 +17,7 @@ export default {
 			'process.env.NODE_ENV': JSON.stringify(mode)
 		}),
 		commonjs(),
-		prod && terser()
+		!dev && terser()
 	],
-	external: Object.keys(pkg.dependencies).concat(
-		require('module').builtinModules
-	),
 	experimentalCodeSplitting: true
 };
\ No newline at end of file