diff --git a/Gemfile b/Gemfile
index 2b795cc..c415bcf 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,7 +10,9 @@ gem 'sqlite3'
 gem 'thin'
 
 gem 'devise'
-gem 'devise_pam_authenticatable'
+gem 'devise_pam_authenticatable',
+  :git      => 'git://github.com/atomaka/devise_pam_authenticatable.git',
+  :branch   => 'ruby19-update'
 gem 'cancan'
 
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 84bf8f3..bf864f8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,3 +1,11 @@
+GIT
+  remote: git://github.com/atomaka/devise_pam_authenticatable.git
+  revision: 0f735fbb3926a46b649c5ef1fa35a7dcd0d6d1f8
+  branch: ruby19-update
+  specs:
+    devise_pam_authenticatable (1.0.3)
+      rpam-ruby19
+
 GEM
   remote: https://rubygems.org/
   specs:
@@ -64,9 +72,6 @@ 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)
@@ -130,7 +135,7 @@ GEM
     rake (10.0.4)
     rdoc (3.12.2)
       json (~> 1.4)
-    rpam (1.0.1)
+    rpam-ruby19 (1.2.1)
     ruby2ruby (2.0.3)
       ruby_parser (~> 3.1)
       sexp_processor (~> 4.0)
@@ -185,7 +190,7 @@ DEPENDENCIES
   cancan
   coffee-rails (~> 3.2.1)
   devise
-  devise_pam_authenticatable
+  devise_pam_authenticatable!
   jquery-rails
   less-rails
   meta_request