diff --git a/package.json b/package.json
index b30a3e6..7c8b7ff 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "glob": "5.0.15",
     "helmet": "0.9.1",
     "jasmine-core": "2.4.1",
-    "lodash": "3.10.1",
+    "lodash": "4.17.21",
     "method-override": "2.3.5",
     "mocha": "1.20.1",
     "mongoose": "4.2.10",
diff --git a/yarn.lock b/yarn.lock
index 5fa839d..640db08 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5230,22 +5230,22 @@ lodash.values@~2.4.1:
   dependencies:
     lodash.keys "~2.4.1"
 
-lodash@*, lodash@^4.0.0, lodash@^4.17.14, lodash@~4.17.10:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
+lodash@*, lodash@4.17.21, lodash@^4.0.0, lodash@^4.17.14, lodash@~4.17.10:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 lodash@2.4.1:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-2.4.1.tgz#5b7723034dda4d262e5a46fb2c58d7cc22f71420"
 
-lodash@3.10.1, lodash@3.x, lodash@^3.0.1, lodash@^3.10.1, lodash@^3.3.1, lodash@^3.8.0, lodash@~3.10.0:
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
-
 lodash@3.7.x:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.7.0.tgz#3678bd8ab995057c07ade836ed2ef087da811d45"
 
+lodash@3.x, lodash@^3.0.1, lodash@^3.10.1, lodash@^3.3.1, lodash@^3.8.0, lodash@~3.10.0:
+  version "3.10.1"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
+
 lodash@^2.4.1, lodash@~2.4.1:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-2.4.2.tgz#fadd834b9683073da179b3eae6d9c0d15053f73e"