diff --git a/js/package-lock.json b/js/package-lock.json
index 19d14da..bd372c6 100644
--- a/js/package-lock.json
+++ b/js/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "jupyter-golden-layout",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -3854,8 +3854,9 @@
           "optional": true
         },
         "tar": {
-          "version": "4.4.13",
-          "bundled": true,
+          "version": "4.4.15",
+          "resolved": "https://registry.npmjs.org/tar/-/tar-4.4.15.tgz",
+          "integrity": "sha512-ItbufpujXkry7bHH9NpQyTXPbJ72iTlXgkBAYsAjDXk3Ds8t/3NfO5P4xZGy7u+sYuQUbimgzswX4uQIEeNVOA==",
           "dev": true,
           "optional": true,
           "requires": {
@@ -6724,9 +6725,9 @@
       "dev": true
     },
     "tar": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/tar/-/tar-6.1.0.tgz",
-      "integrity": "sha512-DUCttfhsnLCjwoDoFcI+B2iJgYa93vBnDUATYEeRx6sntCTdN01VnqsIuTlALXla/LWooNg0yEGeB+Y8WdFxGA==",
+      "version": "6.1.5",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-6.1.5.tgz",
+      "integrity": "sha512-FiK6MQyyaqd5vHuUjbg/NpO8BuEGeSXcmlH7Pt/JkugWS8s0w8nKybWjHDJiwzCAIKZ66uof4ghm4tBADjcqRA==",
       "dev": true,
       "requires": {
         "chownr": "^2.0.0",