diff --git a/Gemfile.lock b/Gemfile.lock
index 4357c5a..9f62a2f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,25 +2,23 @@ PATH
   remote: .
   specs:
     better_serialization (0.2.1)
-      activerecord (~> 3.0)
+      activerecord (> 3.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (3.2.18)
-      activesupport (= 3.2.18)
-      builder (~> 3.0.0)
-    activerecord (3.2.18)
-      activemodel (= 3.2.18)
-      activesupport (= 3.2.18)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activesupport (3.2.18)
-      i18n (~> 0.6, >= 0.6.4)
-      multi_json (~> 1.0)
-    arel (3.0.3)
-    builder (3.0.4)
+    activemodel (7.0.4.1)
+      activesupport (= 7.0.4.1)
+    activerecord (7.0.4.1)
+      activemodel (= 7.0.4.1)
+      activesupport (= 7.0.4.1)
+    activesupport (7.0.4.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
     coderay (1.0.9)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.4)
     ffi (1.9.0)
     formatador (0.2.4)
@@ -33,14 +31,15 @@ GEM
     guard-rspec (3.0.2)
       guard (>= 1.8)
       rspec (~> 2.13)
-    i18n (0.6.9)
+    i18n (1.12.0)
+      concurrent-ruby (~> 1.0)
     listen (1.2.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
       rb-kqueue (>= 0.2)
     lumberjack (1.0.4)
     method_source (0.8.1)
-    multi_json (1.10.1)
+    minitest (5.17.0)
     pry (0.9.12.2)
       coderay (~> 1.0.5)
       method_source (~> 0.8)
@@ -63,7 +62,8 @@ GEM
     sqlite3-ruby (1.3.3)
       sqlite3 (>= 1.3.3)
     thor (0.18.1)
-    tzinfo (0.3.39)
+    tzinfo (2.0.5)
+      concurrent-ruby (~> 1.0)
 
 PLATFORMS
   ruby