diff --git a/package.json b/package.json
index 56e099e..724f6fe 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
     "json-loader": "^0.5.3",
     "jwt-simple": "^0.5.0",
     "librato-node": "^4.1.0",
-    "lodash": "^4.13.1",
+    "lodash": "^4.17.21",
     "minimist": "^1.2.0",
     "newrelic": "^2.4.1",
     "raw-body": "^2.1.7",
diff --git a/yarn.lock b/yarn.lock
index 66b4f39..c684b14 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4284,14 +4284,14 @@ 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@^4.13.1, lodash@^4.14.0, lodash@^4.17.4, lodash@^4.3.0, lodash@latest:
+lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.10, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+
+lodash@latest:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
-lodash@^4.17.10, lodash@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-
 log-symbols@^2.1.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-2.2.0.tgz#5740e1c5d6f0dfda4ad9323b5332107ef6b4c40a"