diff --git a/Gemfile b/Gemfile
index 38b8a8e..0cfec61 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
 # gem "rails"
 gem 'sinatra'
 gem 'sinatra-reloader'
-gem 'activerecord', '~> 5.2.3', require: 'active_record'
+gem 'activerecord', '~> 5.2.8', require: 'active_record'
 gem 'sinatra-activerecord'
 gem 'rake'
 gem 'sqlite3'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3f5eee0..53cdec2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,13 +1,13 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (5.2.4.3)
-      activesupport (= 5.2.4.3)
-    activerecord (5.2.4.3)
-      activemodel (= 5.2.4.3)
-      activesupport (= 5.2.4.3)
+    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 (5.2.4.3)
+    activesupport (5.2.8.1)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -17,13 +17,13 @@ GEM
     bcrypt (3.1.13)
     bond (0.5.1)
     coderay (1.1.3)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.1.10)
     daemons (1.3.1)
     eventmachine (1.2.7)
-    i18n (1.8.3)
+    i18n (1.11.0)
       concurrent-ruby (~> 1.0)
     method_source (1.0.0)
-    minitest (5.14.1)
+    minitest (5.16.2)
     multi_json (1.14.1)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
@@ -79,14 +79,14 @@ GEM
       ripl-multi_line (>= 0.2.4)
       ripl-rack (>= 0.2.0)
       sinatra (>= 1.2.1)
-    tzinfo (1.2.7)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord (~> 5.2.3)
+  activerecord (~> 5.2.8)
   bcrypt
   pry
   rack-flash3