diff --git a/examples/package-lock.json b/examples/package-lock.json
index 07ea3f6..537a721 100644
--- a/examples/package-lock.json
+++ b/examples/package-lock.json
@@ -197,9 +197,9 @@
       "dev": true
     },
     "acorn": {
-      "version": "6.3.0",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.3.0.tgz",
-      "integrity": "sha512-/czfa8BwS88b9gWQVhc8eknunSA2DoJpJyTQkhheIf5E48u1N0R4q/YxxsAeqRrmK9TQ/uYfgLDfZo91UlANIA==",
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+      "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ==",
       "dev": true
     },
     "ajv": {
@@ -2111,7 +2111,17 @@
       }
     },
     "heartbeat-sequencer": {
-      "version": "file:../build"
+      "version": "file:..",
+      "requires": {
+        "@types/webmidi": "^2.0.4"
+      },
+      "dependencies": {
+        "@types/webmidi": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/@types/webmidi/-/webmidi-2.0.4.tgz",
+          "integrity": "sha512-ouA837zUpSzURsUGvcnay6JwUz2B/UoJP3Lkacnz60y+rul8/auVOFS9LSO6v0gdNbGvRkbHEpayD8PbO7IKhw=="
+        }
+      }
     },
     "hmac-drbg": {
       "version": "1.0.1",