diff --git a/extensions/shared.webpack.config.js b/extensions/shared.webpack.config.js
index ab6a40c6b80..d3d89ea635a 100644
--- a/extensions/shared.webpack.config.js
+++ b/extensions/shared.webpack.config.js
@@ -71,7 +71,7 @@ function withNodeDefaults(/**@type WebpackConfig*/extConfig) {
 		plugins: [
 			// @ts-expect-error
 			new CopyWebpackPlugin([
-				{ from: 'src', to: '.', ignore: ['**/test/**', '*.ts'] }
+				{ from: 'src', to: '.', globOptions: { ignore: ['**/test/**', '*.ts'] } }
 			]),
 			new NLSBundlePlugin(id)
 		],
@@ -128,7 +128,7 @@ function withBrowserDefaults(/**@type WebpackConfig*/extConfig) {
 		plugins: [
 			// @ts-expect-error
 			new CopyWebpackPlugin([
-				{ from: 'src', to: '.', ignore: ['**/test/**', '*.ts'] }
+				{ from: 'src', to: '.', globOptions: { ignore: ['**/test/**', '*.ts'] } }
 			]),
 			new DefinePlugin({ WEBWORKER: JSON.stringify(true) })
 		]