diff --git a/package-lock.json b/package-lock.json
index 21ab0efe..766a9490 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1149,6 +1149,7 @@
       "version": "2.10.1",
       "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
       "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
+      "optional": true,
       "requires": {
         "hoek": "2.x.x"
       }
@@ -11310,9 +11311,9 @@
       "integrity": "sha1-OHW0sO96UsFW8NtB1GCduw+Us4c="
     },
     "opn": {
-      "version": "5.4.0",
-      "resolved": "https://registry.npmjs.org/opn/-/opn-5.4.0.tgz",
-      "integrity": "sha512-YF9MNdVy/0qvJvDtunAOzFw9iasOQHpVthTCvGzxt61Il64AYSGdK+rYwld7NAfk9qJ7dt+hymBNSc9LNYS+Sw==",
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/opn/-/opn-6.0.0.tgz",
+      "integrity": "sha512-I9PKfIZC+e4RXZ/qr1RhgyCnGgYX0UEIlXgWnCOVACIvFgaC9rz6Won7xbdhoHrd8IIhV7YEpHjreNUNkqCGkQ==",
       "requires": {
         "is-wsl": "^1.1.0"
       }
diff --git a/package.json b/package.json
index 7147fc01..520776bc 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "multi-glob": "^1.0.1",
     "ncp": "^2.0.0",
     "npm": "^5.6.0",
-    "opn": "^5.1.0",
+    "opn": "^6.0.0",
     "password-hash": "^1.2.2",
     "promised-handlebars-gottwik": "^2.0.1",
     "request": "^2.83.0",