diff --git a/package.json b/package.json
index f44dc88..016d64b 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "express": "^4.13.4",
     "flux": "^2.1.1",
     "isomorphic-fetch": "^2.2.1",
-    "lodash": "^4.11.2",
+    "lodash": "^4.17.21",
     "material-ui": "^0.20.0",
     "prop-types": "^15.6.1",
     "ramda": "^0.21.0",
diff --git a/yarn.lock b/yarn.lock
index 16b85d6..aedfd81 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3779,20 +3779,15 @@ lodash.throttle@^4.1.1:
   resolved "https://registry.yarnpkg.com/lodash.throttle/-/lodash.throttle-4.1.1.tgz#c23e91b710242ac70c37f1e1cda9274cc39bf2f4"
   integrity sha1-wj6RtxAkKscMN/HhzaknTMOb8vQ=
 
-lodash@4.17.10, lodash@^4.11.2, lodash@^4.17.4:
+lodash@4.17.10:
   version "4.17.10"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
   integrity sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
-  integrity sha512-svL3uiZf1RwhH+cWrfZn3A4+U58wbP0tGVTLQPbjplZxZ8ROD9VLuNgsRniTlLe7OlSqR79RUehXgpBW/s0IQw==
-
-lodash@^4.11.1, lodash@^4.17.10, lodash@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+lodash@^4.0.0, lodash@^4.11.1, lodash@^4.14.0, lodash@^4.17.10, lodash@^4.17.2, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 lolex@^2.2.0, lolex@^2.3.2:
   version "2.3.2"