diff --git a/package-lock.json b/package-lock.json
index fe511ac..3ca0ef4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,9 +5,9 @@
   "requires": true,
   "dependencies": {
     "lodash": {
-      "version": "4.17.13",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.13.tgz",
-      "integrity": "sha512-vm3/XWXfWtRua0FkUyEHBZy8kCPjErNBT9fJx8Zvs+U6zjqPbTUOpkaoum3O5uiA8sm+yNMHXfYkTUHFoMxFNA=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     }
   }
 }
diff --git a/package.json b/package.json
index 1ebee79..7b2f4b2 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,6 @@
   },
   "homepage": "https://github.com/badouralix/advent-of-code-2018#readme",
   "dependencies": {
-    "lodash": "^4.17.13"
+    "lodash": "^4.17.21"
   }
 }