diff --git a/package.json b/package.json
index 34e3072..23c3e7f 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "gulp-autoprefixer": "^3.1.1",
     "gulp-cssnano": "^2.1.2",
     "gulp-sass": "^3.1.0",
-    "lodash": "^4.17.4",
+    "lodash": "^4.17.21",
     "qs": "^6.3.0",
     "react": "^15.4.2",
     "react-dom": "^15.4.2",
diff --git a/yarn.lock b/yarn.lock
index 63d2b86..1622493 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2752,9 +2752,9 @@ lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
-lodash@^4.0.0, lodash@^4.17.4, lodash@^4.3.0, lodash@~4.17.4:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
+lodash@^4.0.0, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.3.0, lodash@~4.17.4:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 lodash@~1.0.1:
   version "1.0.2"