diff --git a/package-lock.json b/package-lock.json
index 8763b50..02e336f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "eh-api-client",
-  "version": "0.40.3",
+  "version": "0.40.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -377,9 +377,9 @@
       "dev": true
     },
     "lodash": {
-      "version": "3.10.1",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
-      "integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y="
+      "version": "4.17.13",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.13.tgz",
+      "integrity": "sha512-vm3/XWXfWtRua0FkUyEHBZy8kCPjErNBT9fJx8Zvs+U6zjqPbTUOpkaoum3O5uiA8sm+yNMHXfYkTUHFoMxFNA=="
     },
     "lolex": {
       "version": "1.3.2",
diff --git a/package.json b/package.json
index e72f360..942aead 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "dependencies": {
     "agentkeepalive": "^3.3.0",
     "bluebird": "^3.3.5",
-    "lodash": "^3.9.3",
+    "lodash": "^4.17.13",
     "request": "^2.73.0"
   },
   "devDependencies": {