diff --git a/package.json b/package.json
index efd60c7..904d21a 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "eslint-plugin-standard": "^4.0.1"
   },
   "dependencies": {
-    "lodash": "^4.17.15",
+    "lodash": "^4.17.21",
     "path-to-regexp": "^6.1.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 67b5210..2a8a516 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2264,10 +2264,10 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
-lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+lodash@^4.17.12, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.21:
+  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@^1.4.0:
   version "1.4.0"