diff --git a/Gemfile b/Gemfile
index 7eef02d..089de90 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,4 +1,6 @@
 source "http://rubygems.org"
 
 # Specify your gem's dependencies in ahn-ldap.gemspec
-gemspec
\ No newline at end of file
+gemspec
+
+gem 'ruby-ldap', platform: 'ruby'