diff --git a/package.json b/package.json
index 7a70584..8f758e4 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "@babel/traverse": "7.0.0-beta.38",
     "@babel/types": "7.0.0-beta.38",
     "glob": "^7.1.2",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.21",
     "mz": "^2.7.0"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 45ffd62..5264d46 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1889,9 +1889,10 @@ lodash.merge@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.0.tgz#69884ba144ac33fe699737a6086deffadd0f89c5"
 
-lodash@^4.17.4, lodash@^4.2.0, lodash@^4.5.1:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+lodash@^4.17.21, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.5.1:
+  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:
   version "1.3.1"