diff --git a/package.json b/package.json
index 4acb7362..14d4801a 100644
--- a/package.json
+++ b/package.json
@@ -25,32 +25,32 @@
   },
   "dependencies": {
     "arraybuffer-loader": "^1.0.3",
-    "base64-js": "1.2.1",
-    "js-md5": "0.6.1",
+    "base64-js": "1.3.0",
+    "js-md5": "0.7.3",
     "minilog": "3.1.0",
     "nets": "3.2.0",
-    "text-encoding": "0.6.4"
+    "text-encoding": "0.7.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "6.1.0",
-    "@commitlint/config-conventional": "6.1.0",
-    "@commitlint/travis-cli": "6.1.0",
-    "babel-core": "6.22.1",
-    "babel-eslint": "7.1.1",
-    "babel-loader": "^7.1.4",
-    "babel-polyfill": "6.22.0",
-    "babel-preset-env": "^1.6.1",
+    "@babel/core": "^7.1.2",
+    "@babel/polyfill": "7.0.0",
+    "@babel/preset-env": "^7.1.0",
+    "@commitlint/cli": "7.2.1",
+    "@commitlint/config-conventional": "7.1.2",
+    "@commitlint/travis-cli": "7.2.1",
+    "babel-eslint": "10.0.1",
+    "babel-loader": "^8.0.4",
     "cz-conventional-changelog": "^2.0.0",
-    "eslint": "3.14.1",
-    "eslint-config-scratch": "3.1.0",
-    "eslint-plugin-react": "6.9.0",
-    "file-loader": "1.1.11",
-    "husky": "0.14.3",
+    "eslint": "5.7.0",
+    "eslint-config-scratch": "5.0.0",
+    "eslint-plugin-react": "7.11.1",
+    "file-loader": "2.0.0",
+    "husky": "1.1.2",
     "json": "^9.0.4",
-    "semantic-release": "^6.3.2",
-    "tap": "8.0.1",
+    "semantic-release": "^15.10.5",
+    "tap": "12.0.1",
     "travis-after-all": "^1.4.4",
-    "uglifyjs-webpack-plugin": "^1.2.5",
+    "uglifyjs-webpack-plugin": "^2.0.1",
     "webpack": "^4.8.0",
     "webpack-cli": "^3.1.1"
   },
diff --git a/test/integration/download-known-assets.js b/test/integration/download-known-assets.js
index 68e523a3..3d828f2f 100644
--- a/test/integration/download-known-assets.js
+++ b/test/integration/download-known-assets.js
@@ -3,7 +3,7 @@ const test = require('tap').test;
 
 const ScratchStorage = require('../../dist/node/scratch-storage');
 
-var storage;
+let storage;
 test('constructor', t => {
     storage = new ScratchStorage();
     t.type(storage, ScratchStorage);
@@ -96,10 +96,10 @@ test('load', t => {
             t.strictEqual(md5(asset.data), assetInfo.md5);
         }
     };
-    for (var i = 0; i < testAssets.length; ++i) {
+    for (let i = 0; i < testAssets.length; ++i) {
         const assetInfo = testAssets[i];
 
-        var promise = storage.load(assetInfo.type, assetInfo.id, assetInfo.ext);
+        let promise = storage.load(assetInfo.type, assetInfo.id, assetInfo.ext);
         t.type(promise, 'Promise');
 
         promise = promise.then(asset => checkAsset(assetInfo, asset));
diff --git a/test/unit/load-default-assets.js b/test/unit/load-default-assets.js
index 3e191c88..aa0e2a31 100644
--- a/test/unit/load-default-assets.js
+++ b/test/unit/load-default-assets.js
@@ -3,7 +3,7 @@ const test = require('tap').test;
 
 const ScratchStorage = require('../../dist/node/scratch-storage');
 
-var storage;
+let storage;
 test('constructor', t => {
     storage = new ScratchStorage();
     t.type(storage, ScratchStorage);
@@ -14,7 +14,7 @@ const defaultAssetTypes = [storage.AssetType.ImageBitmap, storage.AssetType.Imag
 const defaultIds = {};
 
 test('getDefaultAssetId', t => {
-    for (var i = 0; i < defaultAssetTypes.length; ++i) {
+    for (let i = 0; i < defaultAssetTypes.length; ++i) {
         const assetType = defaultAssetTypes[i];
         const id = storage.getDefaultAssetId(assetType);
         t.type(id, 'string');
@@ -32,7 +32,7 @@ test('load', t => {
         t.ok(asset.data.length);
         t.strictEqual(md5(asset.data), id);
     };
-    for (var i = 0; i < defaultAssetTypes.length; ++i) {
+    for (let i = 0; i < defaultAssetTypes.length; ++i) {
         const assetType = defaultAssetTypes[i];
         const id = defaultIds[assetType.name];
 
diff --git a/webpack.config.js b/webpack.config.js
index 4fe7a9e3..a6668e53 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -13,7 +13,9 @@ const base = {
                 test: /\.js$/,
                 loader: 'babel-loader',
                 options: {
-                    presets: [['env', {targets: {browsers: ['last 3 versions', 'Safari >= 8', 'iOS >= 8']}}]]
+                    presets: [
+                        ['@babel/preset-env', {targets: {browsers: ['last 3 versions', 'Safari >= 8', 'iOS >= 8']}}]
+                    ]
                 }
             }
         ]