diff --git a/package.json b/package.json
index f6606df..6e6da20 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "express-session": "^1.13.0",
     "font-awesome": "^4.7.0",
     "jquery": "^3.2.1",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.21",
     "marked": "^0.3.6",
     "mongoose": "^4.4.10",
     "morgan": "~1.6.1",
diff --git a/yarn.lock b/yarn.lock
index 639aba9..cb26e10 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4521,9 +4521,9 @@ lodash@^3.5.0, lodash@^3.6.0:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.3.0, lodash@^4.5.1:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.3.0, lodash@^4.5.1:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 lodash@~0.9.2:
   version "0.9.2"