diff --git a/package.json b/package.json
index 1593ac7d..e9009974 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,6 @@
     "vue-splitpane": "1.0.4",
     "vuedraggable": "2.20.0",
     "vuex": "3.1.0",
-    "core-js": "2.6.10",
     "xlsx": "0.14.1"
   },
   "devDependencies": {
@@ -101,7 +100,8 @@
     "serve-static": "^1.13.2",
     "svg-sprite-loader": "4.1.3",
     "svgo": "1.2.0",
-    "vue-template-compiler": "2.6.10"
+    "vue-template-compiler": "2.6.10",
+    "core-js": "2.6.11"
   },
   "engines": {
     "node": ">=8.9",