diff --git a/package.json b/package.json
index 484387c..cdaf468 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "classnames": "2.2.5",
     "glob": "7.1.2",
     "isomorphic-unfetch": "2.0.0",
-    "lodash": "^4.17.13",
+    "lodash": "^4.17.21",
     "marked": "0.6.1",
     "mobx": "5.8.0",
     "mobx-react": "5.4.3",
diff --git a/yarn.lock b/yarn.lock
index 080db1e..32d00cc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3079,17 +3079,10 @@ lodash.debounce@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/lodash.debounce/-/lodash.debounce-4.0.8.tgz#82d79bff30a67c4005ffd5e2515300ad9ca4d7af"
 
-lodash@^4.17.10, lodash@^4.17.4, lodash@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-
-lodash@^4.17.11:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-
-lodash@^4.17.13:
-  version "4.17.13"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.13.tgz#0bdc3a6adc873d2f4e0c4bac285df91b64fc7b93"
+lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.13, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.17.5:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1, loose-envify@^1.4.0:
   version "1.4.0"