diff --git a/package.json b/package.json
index bbdca3d..ec11885 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "html-webpack-plugin": "^3.2.0",
     "less": "^3.9.0",
     "less-loader": "^5.0.0",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "node-emoji": "^1.10.0",
     "pre-commit": "^1.2.2",
     "sass-loader": "^7.1.0",
diff --git a/yarn.lock b/yarn.lock
index 972761f..7911c10 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4254,10 +4254,10 @@ lodash.toarray@^4.4.0:
   resolved "https://registry.yarnpkg.com/lodash.toarray/-/lodash.toarray-4.4.0.tgz#24c4bfcd6b2fba38bfd0594db1179d8e9b656561"
   integrity sha1-JMS/zWsvuji/0FlNsRedjptlZWE=
 
-lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.3:
-  version "4.17.15"
-  resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha1-tEf2ZwoEVbv+7dETku/zMOoJdUg=
+lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.21, lodash@^4.17.3:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loglevel@^1.6.6:
   version "1.6.6"