diff --git a/experimental/babel-preset-env/README.md b/experimental/babel-preset-env/README.md
index 3f50905d76..2edafff21a 100644
--- a/experimental/babel-preset-env/README.md
+++ b/experimental/babel-preset-env/README.md
@@ -81,7 +81,7 @@ Defaults to `{}`.
 > Takes an object of environment versions to support.
 > Each target environment takes a number (you can specify a decimal like `node: 6.5`)
 
-Example environments: "chrome, edge, firefox, safari, ie, ios, node".
+Example environments: "chrome, opera, edge, firefox, safari, ie, ios, android, node, electron".
 
 The data for this is currently at: [/data/plugins.json](/data/plugins.json) and being generated by [/scripts/build-data.js](/scripts/build-data.js) using https://kangax.github.io/compat-table.