diff --git a/lib/plugins/entry-files-manifest.js b/lib/plugins/entry-files-manifest.js
index 6998878c..4e9ae7b0 100644
--- a/lib/plugins/entry-files-manifest.js
+++ b/lib/plugins/entry-files-manifest.js
@@ -28,8 +28,10 @@ function processOutput(webpackConfig) {
         // the original assets (so, assets.entrypoints) + the new
         // assets (which will have their original structure). We
         // delete the entrypoints key, and then process the new assets
-        // like normal below
+        // like normal below. The same reasoning applies to the
+        // integrity key.
         delete assets.entrypoints;
+        delete assets.integrity;
 
         // This will iterate over all the entry points and convert the
         // one file entries into an array of one entry since that was how the entry point file was before this change.