diff --git a/guides/package.json b/guides/package.json
index 2e68dfa7e4f..213994da977 100644
--- a/guides/package.json
+++ b/guides/package.json
@@ -20,7 +20,7 @@
     "cross-env": "^3.2.3",
     "css-loader": "^0.28.9",
     "extract-text-webpack-plugin": "^3.0.2",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "node-sass": "^4.12.0",
     "postcss-loader": "~2.1.1",
     "randomatic": ">=3.0.0",
diff --git a/guides/yarn.lock b/guides/yarn.lock
index fc920135d57..d5337da92b2 100644
--- a/guides/yarn.lock
+++ b/guides/yarn.lock
@@ -3879,10 +3879,10 @@ lodash@^3.10.1:
   resolved "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
   integrity sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y=
 
-lodash@^4.0.0, lodash@^4.17.10, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.4, lodash@^4.17.5, lodash@~4.17.10:
-  version "4.17.19"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.19.tgz#e48ddedbe30b3321783c5b4301fbd353bc1e4a4b"
-  integrity sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ==
+lodash@^4.0.0, lodash@^4.17.10, lodash@^4.17.15, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.17.5, lodash@~4.17.10:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 longest@^1.0.1:
   version "1.0.1"