diff --git a/webpack.common.js b/webpack.common.js
index 79d0827b5..4fb7c2ec9 100644
--- a/webpack.common.js
+++ b/webpack.common.js
@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 /* eslint-env node */
 /* eslint @typescript-eslint/no-var-requires: "off" */
 
diff --git a/webpack.dev.js b/webpack.dev.js
index 728751376..abe50f99c 100644
--- a/webpack.dev.js
+++ b/webpack.dev.js
@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 /* eslint-env node */
 /* eslint @typescript-eslint/no-var-requires: "off" */
 
diff --git a/webpack.prod.js b/webpack.prod.js
index 8c45fd935..c5f9c637b 100644
--- a/webpack.prod.js
+++ b/webpack.prod.js
@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 /* eslint-env node */
 /* eslint @typescript-eslint/no-var-requires: "off" */