diff --git a/.webpack/webpack.coverage.js b/.webpack/webpack.coverage.js
index 14d11fe7bc..0493efaff8 100644
--- a/.webpack/webpack.coverage.js
+++ b/.webpack/webpack.coverage.js
@@ -5,11 +5,8 @@ information to pull requests.
 */
 
 import config from './webpack.dev.js';
-// eslint-disable-next-line no-undef
-const CI = process.env.CI === 'true';
-
-config.devtool = CI ? false : undefined;
 
+config.devtool = 'source-map';
 config.devServer.hot = false;
 
 config.module.rules.push({