diff --git a/package.json b/package.json
index c4a8012..dd3c53e 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "ethereumjs-wallet": "^0.6.3",
     "ethjs-ens": "^2.0.1",
     "isomorphic-fetch": "^2.2.1",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.21",
     "rollup-plugin-babel": "^4.3.2",
     "web3": "^1.0.0-beta.54",
     "web3-provider-engine": "^15.0.0"
diff --git a/yarn.lock b/yarn.lock
index 4657c16..b62c51c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3276,9 +3276,9 @@ lodash.flatmap@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.flatmap/-/lodash.flatmap-4.5.0.tgz#ef8cbf408f6e48268663345305c6acc0b778702e"
 
-lodash@^4.17.11, lodash@^4.17.4, lodash@^4.3.0:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
+lodash@^4.17.11, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 loose-envify@^1.0.0:
   version "1.4.0"