diff --git a/ruby-projects/sample_blog/Gemfile.lock b/ruby-projects/sample_blog/Gemfile.lock
index 6db32bd..3af08d5 100644
--- a/ruby-projects/sample_blog/Gemfile.lock
+++ b/ruby-projects/sample_blog/Gemfile.lock
@@ -64,8 +64,9 @@ GEM
       padrino-core (= 0.12.4)
     padrino-support (0.12.4)
       activesupport (>= 3.1)
+    pg (1.3.5)
     polyglot (0.3.5)
-    rack (1.5.2)
+    rack (1.6.13)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.2)
@@ -82,7 +83,6 @@ GEM
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
-    sqlite3 (1.3.10)
     thor (0.19.1)
     thread_safe (0.3.4)
     tilt (1.4.1)
@@ -102,8 +102,8 @@ DEPENDENCIES
   bcrypt
   haml
   padrino (= 0.12.4)
+  pg
   rack-test
   rake
   sass
   shoulda
-  sqlite3