diff --git a/package-lock.json b/package-lock.json
index dbbca79..1ab4607 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -387,9 +387,9 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "underscore": {
-      "version": "1.5.2",
-      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.5.2.tgz",
-      "integrity": "sha1-EzXF5PXm0zu7SwBrqMhqAPVW3gg="
+      "version": "1.12.1",
+      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.12.1.tgz",
+      "integrity": "sha512-hEQt0+ZLDVUMhebKxL4x1BTtDY7bavVofhZ9KZ4aI26X9SRaE+Y3m83XUL1UP2jn8ynjndwCCpEHdUG+9pP1Tw=="
     },
     "util-deprecate": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index b786c62..a50d0e8 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "dependencies": {
     "topojson": "~1.4.3",
-    "underscore": "~1.5.2"
+    "underscore": "~1.12.1"
   },
   "devDependencies": {},
   "scripts": {