diff --git a/package.json b/package.json
index a0cdcbc..68515d3 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "deploy": "git subtree push --prefix dist heroku master"
   },
   "dependencies": {
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.21",
     "moment": "^2.19.1",
     "moment-timezone": "^0.5.13",
     "node-sass": "^4.5.3",
diff --git a/yarn.lock b/yarn.lock
index e5c500b..a49f7da 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3003,9 +3003,9 @@ lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.3.0, lodash@~4.17.4:
-  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@^4.17.2, lodash@^4.17.21, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.3.0, lodash@~4.17.4:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 log-symbols@^1.0.2:
   version "1.0.2"