diff --git a/package-lock.json b/package-lock.json
index cbe1670..5b0db88 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -46,6 +46,12 @@
         "underscore": "1.8.3"
       },
       "dependencies": {
+        "class.extend": {
+          "version": "0.9.2",
+          "resolved": "https://registry.npmjs.org/class.extend/-/class.extend-0.9.2.tgz",
+          "integrity": "sha1-4cvaNpfLMdPNqxwAHSaQdckDH3g=",
+          "dev": true
+        },
         "underscore": {
           "version": "1.8.3",
           "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.8.3.tgz",
@@ -1084,9 +1090,9 @@
       }
     },
     "class.extend": {
-      "version": "0.9.2",
-      "resolved": "https://registry.npmjs.org/class.extend/-/class.extend-0.9.2.tgz",
-      "integrity": "sha1-4cvaNpfLMdPNqxwAHSaQdckDH3g="
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/class.extend/-/class.extend-0.9.1.tgz",
+      "integrity": "sha1-tO5BfGk3QKRKkqbWTxyVQGQbCXo="
     },
     "cli-cursor": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index 97d171c..646c64e 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "video.js": ">=6.0.0"
   },
   "dependencies": {
-    "class.extend": "0.9.2",
+    "class.extend": "0.9.1",
     "underscore": "1.9.1"
   }
 }