Gemfile.lock in association_callbacks-0.1.0 vs Gemfile.lock in association_callbacks-0.2.0

@@ -1,35 +1,36 @@
 PATH
   remote: .
   specs:
-    association_callbacks (0.1.0)
-      activerecord (~> 3.2.0)
-      activesupport (~> 3.2.0)
+    association_callbacks (0.2.0)
+      activerecord (~> 4.0.0)
+      activesupport (~> 4.0.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (3.2.13)
-      activesupport (= 3.2.13)
-      builder (~> 3.0.0)
-    activerecord (3.2.13)
-      activemodel (= 3.2.13)
-      activesupport (= 3.2.13)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activesupport (3.2.13)
-      i18n (= 0.6.1)
-      multi_json (~> 1.0)
-    arel (3.0.2)
-    builder (3.0.4)
-    byebug (1.6.1)
-      columnize (~> 0.3.6)
-      debugger-linecache (~> 1.2.0)
-    columnize (0.3.6)
-    debugger-linecache (1.2.0)
+    activemodel (4.0.0)
+      activesupport (= 4.0.0)
+      builder (~> 3.1.0)
+    activerecord (4.0.0)
+      activemodel (= 4.0.0)
+      activerecord-deprecated_finders (~> 1.0.2)
+      activesupport (= 4.0.0)
+      arel (~> 4.0.0)
+    activerecord-deprecated_finders (1.0.3)
+    activesupport (4.0.0)
+      i18n (~> 0.6, >= 0.6.4)
+      minitest (~> 4.2)
+      multi_json (~> 1.3)
+      thread_safe (~> 0.1)
+      tzinfo (~> 0.3.37)
+    arel (4.0.0)
+    atomic (1.1.10)
+    builder (3.1.4)
     diff-lcs (1.2.4)
-    i18n (0.6.1)
+    i18n (0.6.4)
+    minitest (4.7.5)
     multi_json (1.7.7)
     rake (10.1.0)
     rspec (2.14.1)
       rspec-core (~> 2.14.0)
       rspec-expectations (~> 2.14.0)
@@ -39,16 +40,17 @@
       diff-lcs (>= 1.1.3, < 2.0)
     rspec-mocks (2.14.1)
     sqlite3 (1.3.7)
     sqlite3-ruby (1.3.3)
       sqlite3 (>= 1.3.3)
+    thread_safe (0.1.0)
+      atomic
     tzinfo (0.3.37)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   association_callbacks!
-  byebug (~> 1.6.0)
   rake (~> 10.1.0)
   rspec (~> 2.14.0)
   sqlite3-ruby (~> 1.3.0)