diff --git a/SerialIntro/package-lock.json b/SerialIntro/package-lock.json
index 0b53747..b0177ea 100644
--- a/SerialIntro/package-lock.json
+++ b/SerialIntro/package-lock.json
@@ -1251,9 +1251,9 @@
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     },
     "semver": {
-      "version": "5.5.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
-      "integrity": "sha512-PqpAxfrEhlSUWge8dwIp4tZnQ25DIOthpiaHNIthsjEFQD6EvqUKUDM7L8O2rShkFccYo1VjJR0coWfNkCubRw=="
+      "version": "5.7.2",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
+      "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="
     },
     "serialport": {
       "version": "7.0.2",