diff --git a/node_modules/webpack/lib/optimize/ConcatenatedModule.js b/node_modules/webpack/lib/optimize/ConcatenatedModule.js
index 03711c4..df4d216 100644
--- a/node_modules/webpack/lib/optimize/ConcatenatedModule.js
+++ b/node_modules/webpack/lib/optimize/ConcatenatedModule.js
@@ -560,7 +560,7 @@ class ConcatenatedModule extends Module {
 				orderedConcatenationListIdentifiers += " ";
 			}
 		}
-		const hash = createHash("md4");
+		const hash = createHash("sha256");
 		hash.update(orderedConcatenationListIdentifiers);
 		return this.rootModule.identifier() + " " + hash.digest("hex");
 	}