diff --git a/20180517memory-leak/20200702require-vm/package-lock.json b/20180517memory-leak/20200702require-vm/package-lock.json
index 7d343b6..e314414 100644
--- a/20180517memory-leak/20200702require-vm/package-lock.json
+++ b/20180517memory-leak/20200702require-vm/package-lock.json
@@ -10,9 +10,9 @@
       "integrity": "sha512-syUgf67ZQpaJj01/tRTknkMNoBBLWJOBODF0Zm4NrXmiSuxjymFrxnTu1QVYRubhVkRcZLYZG8STTwJRdVm/WQ=="
     },
     "lodash": {
-      "version": "4.17.19",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "require-vm": {
       "version": "1.0.3",
diff --git a/20180517memory-leak/20200702require-vm/package.json b/20180517memory-leak/20200702require-vm/package.json
index 9df164c..6106845 100644
--- a/20180517memory-leak/20200702require-vm/package.json
+++ b/20180517memory-leak/20200702require-vm/package.json
@@ -9,7 +9,7 @@
   "author": "zy445566",
   "license": "MIT",
   "dependencies": {
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "require-vm": "^1.0.3"
   }
 }