1 files changed, 6 insertions, 4 deletions
diff --git a/lib/plugins/installPlugins.js b/lib/plugins/installPlugins.js
index a0365b3..307c41e 100644
--- a/lib/plugins/installPlugins.js
+++ b/lib/plugins/installPlugins.js
@@ -1,11 +1,9 @@
 var npmi = require('npmi');
 
-var pkg = require('../../package.json');
 var DEFAULT_PLUGINS = require('../constants/defaultPlugins');
 var Promise = require('../utils/promise');
 var installPlugin = require('./installPlugin');
 
-
 /**
     Install plugin requirements for a book
 
@@ -20,13 +18,17 @@ function installPlugins(book) {
     // Remove default plugins
     // (only if version is same as installed)
     plugins = plugins.filterNot(function(plugin) {
+        var dependency = DEFAULT_PLUGINS.find(function(dep) {
+            return dep.getName() === plugin.getName();
+        });
+
         return (
             // Disabled plugin
             !plugin.isEnabled() ||
 
             // Or default one installed in GitBook itself
-            (DEFAULT_PLUGINS.includes(plugin.getName()) &&
-            plugin.getVersion() === pkg.dependencies[plugin.getNpmID()])
+            (dependency &&
+            plugin.getVersion() === dependency.getVersion())
         );
     });