diff --git a/package-lock.json b/package-lock.json
index 445e80f..0223ae1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -997,9 +997,9 @@
       "integrity": "sha1-+eIwPUUH9tdDVac2ZNFED7Wg71k="
     },
     "lodash": {
-      "version": "4.17.19",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.19.tgz",
-      "integrity": "sha512-JNvd8XER9GQX0v2qJgsaN/mzFCNA5BRe/j8JN9d+tWyGLSodKQHKFicdwNYzWwI3wjRnaKPsGj1XkBjx/F96DQ=="
+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+      "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
     },
     "lru-cache": {
       "version": "4.1.5",
diff --git a/package.json b/package.json
index 223c7cd..72a9166 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "commander": "^3.0.0",
     "easymidi": "^1.0.1",
     "hapi": "^18.1.0",
-    "lodash": "^4.17.19",
+    "lodash": "^4.17.21",
     "mathjs": "^5.10.0",
     "nanotimer": "^0.3.15",
     "note-parser": "^2.0.1",