diff --git a/Gemfile b/Gemfile
index d1962a8..2b795cc 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,7 @@ gem 'sqlite3'
 gem 'thin'
 
 gem 'devise'
-
+gem 'devise_pam_authenticatable'
 gem 'cancan'
 
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 9111999..84bf8f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,6 +64,9 @@ GEM
       orm_adapter (~> 0.1)
       railties (~> 3.1)
       warden (~> 1.2.1)
+    devise_pam_authenticatable (1.0.3)
+      devise (> 1.1.0)
+      rpam
     erubis (2.7.0)
     eventmachine (1.0.3)
     execjs (1.4.0)
@@ -79,7 +82,6 @@ GEM
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
     json (1.7.7)
-    krb5-auth (0.7)
     less (2.3.1)
       commonjs (~> 0.2.6)
     less-rails (2.3.2)
@@ -128,6 +130,7 @@ GEM
     rake (10.0.4)
     rdoc (3.12.2)
       json (~> 1.4)
+    rpam (1.0.1)
     ruby2ruby (2.0.3)
       ruby_parser (~> 3.1)
       sexp_processor (~> 4.0)
@@ -182,8 +185,8 @@ DEPENDENCIES
   cancan
   coffee-rails (~> 3.2.1)
   devise
+  devise_pam_authenticatable
   jquery-rails
-  krb5-auth
   less-rails
   meta_request
   rack-mini-profiler