diff --git a/package-lock.json b/package-lock.json
index d000496..824530b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3584,9 +3584,9 @@
       }
     },
     "lodash": {
-      "version": "3.10.1",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
-      "integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "lodash-es": {
       "version": "4.17.15",
diff --git a/package.json b/package.json
index b51eb58..85fa49a 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
   "dependencies": {
     "babel-preset-stage-1": "^6.1.18",
     "jspsych-react": "https://github.com/openexp/jspsych-react.git#v0.4.0",
-    "lodash": "^3.10.1",
+    "lodash": "^4.17.21",
     "react": "^0.14.3",
     "react-dom": "^0.14.3",
     "react-redux": "4.3.0",