diff --git a/package.json b/package.json
index 76be249..973734d 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "NodeJS client for API servers",
   "dependencies": {
     "cf-errors": "^0.1.15",
-    "lodash": "4.17.20",
+    "lodash": "4.17.21",
     "mime": "^1.2.11",
     "q": "^1.4.1",
     "request": "2.88.2"
diff --git a/yarn.lock b/yarn.lock
index 4ba34d7..f105b4e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1805,11 +1805,16 @@ lodash.values@~2.4.1:
   dependencies:
     lodash.keys "~2.4.1"
 
-lodash@4.17.20, lodash@~4.17.19:
+lodash@4.17.20:
   version "4.17.20"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.20.tgz#b44a9b6297bcb698f1c51a3545a2b3b368d59c52"
   integrity sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA==
 
+lodash@4.17.21, lodash@~4.17.19:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
+
 lodash@^3.0.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"