diff --git a/build/css/index.css b/build/css/index.css
index 60223c66..c17083a0 100644
--- a/build/css/index.css
+++ b/build/css/index.css
@@ -1,6 +1,6 @@
 /*!
  * 
- *   simple-keyboard v2.7.6
+ *   simple-keyboard v2.7.7
  *   https://github.com/hodgef/simple-keyboard
  * 
  *   Copyright (c) Francisco Hodge (https://github.com/hodgef)
diff --git a/build/index.js b/build/index.js
index f986b51f..73f52377 100644
--- a/build/index.js
+++ b/build/index.js
@@ -1,6 +1,6 @@
 /*!
  * 
- *   simple-keyboard v2.7.6
+ *   simple-keyboard v2.7.7
  *   https://github.com/hodgef/simple-keyboard
  * 
  *   Copyright (c) Francisco Hodge (https://github.com/hodgef)
diff --git a/package-lock.json b/package-lock.json
index 0208f778..89522c2f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "simple-keyboard",
-  "version": "2.7.6",
+  "version": "2.7.7",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -3675,7 +3675,7 @@
     },
     "duplexer": {
       "version": "0.1.1",
-      "resolved": "http://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
+      "resolved": "https://registry.npmjs.org/duplexer/-/duplexer-0.1.1.tgz",
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },