diff --git a/CHANGELOG.md b/CHANGELOG.md
index e25ad31..50bf96d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.5.1] - 2022-02-03
+
+### Changed
+
+- Added `browserslist` section to `package.json` to specify that babel should transpile to ES5
+
 ## [0.5.0] - 2022-02-01
 
 ### Added
diff --git a/babel.config.js b/babel.config.js
index 6941103..8e5f789 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -1,3 +1,6 @@
 module.exports = {
-  presets: [['@babel/preset-env', {targets: {node: 'current'}}]]
+  presets: ['@babel/preset-env'],
+  plugins: [
+    ["@babel/transform-runtime"]
+  ]
 };
diff --git a/dist/signalerjs.min.js b/dist/signalerjs.min.js
index 80dfc42..9d3e69e 100644
--- a/dist/signalerjs.min.js
+++ b/dist/signalerjs.min.js
@@ -1 +1 @@
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diff --git a/package-lock.json b/package-lock.json
index 01c2ad9..ece47ef 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,11 +1,11 @@
 {
   "name": "signalerjs",
-  "version": "0.4.0",
+  "version": "0.5.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
-      "version": "0.4.0",
+      "version": "0.5.1",
       "license": "MIT",
       "dependencies": {
         "blueimp-md5": "2.19.0",
@@ -16,6 +16,7 @@
         "@babel/core": "^7.0.0",
         "@babel/eslint-parser": "^7.0.0",
         "@babel/eslint-plugin": "^7.0.0",
+        "@babel/plugin-transform-runtime": "^7.17.0",
         "@babel/preset-env": "^7.0.0",
         "babel-loader": "^8.2.3",
         "es6-promise": "4.2.4",
@@ -1386,6 +1387,26 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/plugin-transform-runtime": {
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.17.0.tgz",
+      "integrity": "sha512-fr7zPWnKXNc1xoHfrIU9mN/4XKX4VLZ45Q+oMhfsYIaHvg7mHgmhfOy/ckRWqDK7XF3QDigRpkh5DKq6+clE8A==",
+      "dev": true,
+      "dependencies": {
+        "@babel/helper-module-imports": "^7.16.7",
+        "@babel/helper-plugin-utils": "^7.16.7",
+        "babel-plugin-polyfill-corejs2": "^0.3.0",
+        "babel-plugin-polyfill-corejs3": "^0.5.0",
+        "babel-plugin-polyfill-regenerator": "^0.3.0",
+        "semver": "^6.3.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0-0"
+      }
+    },
     "node_modules/@babel/plugin-transform-shorthand-properties": {
       "version": "7.16.7",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-shorthand-properties/-/plugin-transform-shorthand-properties-7.16.7.tgz",
@@ -9692,6 +9713,20 @@
         "@babel/helper-plugin-utils": "^7.16.7"
       }
     },
+    "@babel/plugin-transform-runtime": {
+      "version": "7.17.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-runtime/-/plugin-transform-runtime-7.17.0.tgz",
+      "integrity": "sha512-fr7zPWnKXNc1xoHfrIU9mN/4XKX4VLZ45Q+oMhfsYIaHvg7mHgmhfOy/ckRWqDK7XF3QDigRpkh5DKq6+clE8A==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-module-imports": "^7.16.7",
+        "@babel/helper-plugin-utils": "^7.16.7",
+        "babel-plugin-polyfill-corejs2": "^0.3.0",
+        "babel-plugin-polyfill-corejs3": "^0.5.0",
+        "babel-plugin-polyfill-regenerator": "^0.3.0",
+        "semver": "^6.3.0"
+      }
+    },
     "@babel/plugin-transform-shorthand-properties": {
       "version": "7.16.7",
       "resolved": "https://registry.npmjs.org/@babel/plugin-transform-shorthand-properties/-/plugin-transform-shorthand-properties-7.16.7.tgz",
diff --git a/package.json b/package.json
index 510d40f..c9891fb 100644
--- a/package.json
+++ b/package.json
@@ -1,10 +1,10 @@
 {
   "name": "signalerjs",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "JavaScript A/B testing feature flag library",
   "main": "dist/signalerjs.min.js",
   "scripts": {
-    "build": "webpack",
+    "build": "webpack --mode production",
     "test": "jest",
     "lint": "npx eslint ./src ./test"
   },
@@ -23,10 +23,16 @@
   ],
   "author": "Custom Ink Technology",
   "license": "MIT",
+  "browserslist": [
+    "> 1%",
+    "last 2 versions",
+    "not ie <= 8"
+  ],
   "devDependencies": {
     "@babel/core": "^7.0.0",
     "@babel/eslint-parser": "^7.0.0",
     "@babel/eslint-plugin": "^7.0.0",
+    "@babel/plugin-transform-runtime": "^7.17.0",
     "@babel/preset-env": "^7.0.0",
     "babel-loader": "^8.2.3",
     "es6-promise": "4.2.4",
diff --git a/webpack.config.js b/webpack.config.js
index 12ea76d..70e6d71 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -10,7 +10,7 @@ module.exports = {
         use: {
           loader: 'babel-loader',
           options: {
-            presets: [['@babel/preset-env', {targets: 'defaults'}]]
+            presets: ['@babel/preset-env']
           }
         }
       },