diff --git a/static/transforms/index.js b/static/transforms/index.js
index 247e20b8c..ead49229b 100644
--- a/static/transforms/index.js
+++ b/static/transforms/index.js
@@ -47,6 +47,7 @@ function transform({filename, options, src}) {
     plugins.push(
       require('../node_modules/@babel/plugin-transform-typescript'),
       require('../node_modules/@babel/plugin-transform-modules-commonjs'),
+      require('../node_modules/@babel/plugin-proposal-class-properties'),
     );
   }