diff --git a/index.js b/index.js
index f6e2530ca6..4274b18267 100644
--- a/index.js
+++ b/index.js
@@ -7,6 +7,8 @@ module.exports = function (api, options) {
       require("@babel/plugin-transform-arrow-functions"),
       require("@babel/plugin-transform-block-scoped-functions"),
       require("@babel/plugin-transform-block-scoping"),
+      require("@babel/plugin-syntax-class-properties"),
+      require("@babel/plugin-proposal-class-properties"),
       [require("@babel/plugin-transform-classes"), {
         loose: true
       }],
diff --git a/modern.js b/modern.js
index 95b9590b85..1d4a068be8 100644
--- a/modern.js
+++ b/modern.js
@@ -9,9 +9,8 @@ exports.getPreset = function (api, options) {
       }],
       require("@babel/plugin-transform-literals"),
       require("@babel/plugin-transform-template-literals"),
-      // [require("@babel/plugin-transform-classes"), {
-      //   loose: true
-      // }],
+      require("@babel/plugin-syntax-class-properties"),
+      require("@babel/plugin-proposal-class-properties"),
       require("@babel/plugin-transform-parameters"),
       // require("@babel/plugin-transform-unicode-regex"),
       require("@babel/plugin-proposal-object-rest-spread"),
diff --git a/package.json b/package.json
index 1af51ba98e..e0aeed9f56 100644
--- a/package.json
+++ b/package.json
@@ -8,8 +8,10 @@
   "main": "index.js",
   "dependencies": {
     "@babel/plugin-proposal-async-generator-functions": "^7.2.0",
+    "@babel/plugin-proposal-class-properties": "^7.5.0",
     "@babel/plugin-proposal-object-rest-spread": "^7.5.0",
     "@babel/plugin-syntax-async-generators": "^7.2.0",
+    "@babel/plugin-syntax-class-properties": "^7.2.0",
     "@babel/plugin-syntax-flow": "^7.2.0",
     "@babel/plugin-syntax-object-rest-spread": "^7.2.0",
     "@babel/plugin-transform-arrow-functions": "^7.2.0",