diff --git a/ckeditor5/node_modules/terser-webpack-plugin/package.json b/ckeditor5/node_modules/terser-webpack-plugin/package.json
index efa72f8..ad050bf 100644
--- a/ckeditor5/node_modules/terser-webpack-plugin/package.json
+++ b/ckeditor5/node_modules/terser-webpack-plugin/package.json
@@ -47,7 +47,7 @@
     "p-limit": "^3.0.2",
     "schema-utils": "^3.0.0",
     "serialize-javascript": "^5.0.1",
-    "source-map": "^0.6.1",
+    "source-map": "^0.7.6",
     "terser": "^5.3.4",
     "webpack-sources": "^1.4.3"
   },