diff --git a/package.json b/package.json
index bd4863e..f77e3b0 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "html-parse-stringify": "^1.0.3",
     "intersection-observer": "^0.7.0",
     "linkifyjs": "^2.1.8",
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "node-sass": "^4.12.0",
     "normalize.css": "^8.0.1",
     "nprogress": "^0.2.0",
diff --git a/yarn.lock b/yarn.lock
index e82d0dc..34c8df5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4379,7 +4379,7 @@ json5@^0.5.0, json5@^0.5.1:
 
 jsonfile@^2.1.0:
   version "2.4.0"
-  resolved "http://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
+  resolved "https://registry.npmjs.org/jsonfile/-/jsonfile-2.4.0.tgz#3736a2b428b87bbda0cc83b53fa3d633a35c2ae8"
   integrity sha1-NzaitCi4e72gzIO1P6PWM6NcKug=
   optionalDependencies:
     graceful-fs "^4.1.6"
@@ -4628,20 +4628,10 @@ lodash.uniqueid@^4.0.1:
   resolved "https://registry.npm.taobao.org/lodash.uniqueid/download/lodash.uniqueid-4.0.1.tgz#3268f26a7c88e4f4b1758d679271814e31fa5b26"
   integrity sha1-MmjyanyI5PSxdY1nknGBTjH6WyY=
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.3.0, lodash@~4.17.4:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
-  integrity sha512-svL3uiZf1RwhH+cWrfZn3A4+U58wbP0tGVTLQPbjplZxZ8ROD9VLuNgsRniTlLe7OlSqR79RUehXgpBW/s0IQw==
-
-lodash@^4.17.11:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
-
-lodash@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.npm.taobao.org/lodash/download/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha1-tEf2ZwoEVbv+7dETku/zMOoJdUg=
+lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.11, lodash@^4.17.2, lodash@^4.17.21, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.3.0, lodash@~4.17.4:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 log-symbols@^2.1.0, log-symbols@^2.2.0:
   version "2.2.0"