diff --git a/Gemfile b/Gemfile
index d3a3970..29e3697 100644
--- a/Gemfile
+++ b/Gemfile
@@ -9,7 +9,7 @@ gem 'rake'
 gem 'slim'
 gem 'bcrypt'
 gem 'sass'
-gem 'activerecord', '4.2.0', :require => 'active_record'
+gem 'activerecord', '5.2.8.1', :require => 'active_record'
 gem 'mini_record'
 
 # Test requirements
diff --git a/Gemfile.lock b/Gemfile.lock
index 0070969..0e64a67 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,23 +1,21 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (4.2.0)
-      activesupport (= 4.2.0)
-      builder (~> 3.1)
-    activerecord (4.2.0)
-      activemodel (= 4.2.0)
-      activesupport (= 4.2.0)
-      arel (~> 6.0)
-    activesupport (4.2.0)
-      i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
+    activemodel (5.2.8.1)
+      activesupport (= 5.2.8.1)
+    activerecord (5.2.8.1)
+      activemodel (= 5.2.8.1)
+      activesupport (= 5.2.8.1)
+      arel (>= 9.0)
+    activesupport (5.2.8.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    arel (6.0.3)
+    arel (9.0.0)
     bcrypt (3.1.10)
-    builder (3.2.2)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     coveralls (0.8.3)
       json (~> 1.8)
       rest-client (>= 1.6.8, < 2)
@@ -37,8 +35,9 @@ GEM
       rack (>= 1.0.0)
       url_mount (~> 0.2.1)
     httpclient (2.6.0.1)
-    i18n (0.7.0)
-    json (1.8.3)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
@@ -46,7 +45,7 @@ GEM
     mime-types (1.25.1)
     mini_record (0.4.6)
       activerecord (>= 3.2.0)
-    minitest (5.8.2)
+    minitest (5.15.0)
     moneta (0.7.20)
     multi_json (1.11.2)
     netrc (0.11.0)
@@ -141,13 +140,13 @@ GEM
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     tins (1.6.0)
     treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
@@ -159,7 +158,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord (= 4.2.0)
+  activerecord (= 5.2.8.1)
   bcrypt
   coveralls
   database_cleaner (= 1.0.1)