diff --git a/extensions/json-language-features/extension.webpack.config.js b/extensions/json-language-features/extension.webpack.config.js
index a4d4ff955d7..39e5e567a7a 100644
--- a/extensions/json-language-features/extension.webpack.config.js
+++ b/extensions/json-language-features/extension.webpack.config.js
@@ -9,7 +9,7 @@
 
 const withDefaults = require('../shared.webpack.config');
 const path = require('path');
-var webpack = require('webpack');
+const webpack = require('webpack');
 
 const config = withDefaults({
 	context: path.join(__dirname, 'client'),
@@ -25,4 +25,4 @@ const config = withDefaults({
 // add plugin, don't replace inherited
 config.plugins.push(new webpack.IgnorePlugin(/vertx/)); // request-light dependency
 
-module.exports = config;
\ No newline at end of file
+module.exports = config;
diff --git a/extensions/json-language-features/server/extension.webpack.config.js b/extensions/json-language-features/server/extension.webpack.config.js
index 22b23c1d94b..2c90a0b0751 100644
--- a/extensions/json-language-features/server/extension.webpack.config.js
+++ b/extensions/json-language-features/server/extension.webpack.config.js
@@ -9,7 +9,7 @@
 
 const withDefaults = require('../../shared.webpack.config');
 const path = require('path');
-var webpack = require('webpack');
+const webpack = require('webpack');
 
 const config = withDefaults({
 	context: path.join(__dirname),