diff --git a/Gemfile b/Gemfile
index 2e45665ac..791701d10 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem "mime-types"
 
 # Optional gem for LDAP authentication
 group :ldap do
-  gem "net-ldap", "~> 0.3.1"
+  gem "net-ldap", "~> 0.16.2"
 end
 
 # Optional gem for OpenID authentication
diff --git a/Gemfile.lock b/Gemfile.lock
index 1a407ee12..2a482c28d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,7 +63,7 @@ GEM
     mocha (1.0.0)
       metaclass (~> 0.0.1)
     multi_json (1.10.1)
-    net-ldap (0.3.1)
+    net-ldap (0.16.2)
     nokogiri (1.6.3.1)
       mini_portile (= 0.6.0)
     pg (0.17.1)
@@ -142,7 +142,7 @@ DEPENDENCIES
   jquery-rails (~> 2.0.2)
   mime-types
   mocha (~> 1.0.0)
-  net-ldap (~> 0.3.1)
+  net-ldap (~> 0.16.2)
   pg
   rack-openid
   rails (= 3.2.19)