diff --git a/Gemfile b/Gemfile
index d33a1c0..b6586e5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'bcrypt_pbkdf'
 gem "ed25519"
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '5.2.0'
+gem 'rails', '5.2.3'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.3.13'
 # Use SCSS for stylesheets
diff --git a/Gemfile.lock b/Gemfile.lock
index c6381a1..5e888ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,43 +1,43 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.0)
-      actionpack (= 5.2.0)
+    actioncable (5.2.3)
+      actionpack (= 5.2.3)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.0)
-      actionpack (= 5.2.0)
-      actionview (= 5.2.0)
-      activejob (= 5.2.0)
+    actionmailer (5.2.3)
+      actionpack (= 5.2.3)
+      actionview (= 5.2.3)
+      activejob (= 5.2.3)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.2.0)
-      actionview (= 5.2.0)
-      activesupport (= 5.2.0)
+    actionpack (5.2.3)
+      actionview (= 5.2.3)
+      activesupport (= 5.2.3)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.2.0)
-      activesupport (= 5.2.0)
+    actionview (5.2.3)
+      activesupport (= 5.2.3)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.2.0)
-      activesupport (= 5.2.0)
+    activejob (5.2.3)
+      activesupport (= 5.2.3)
       globalid (>= 0.3.6)
-    activemodel (5.2.0)
-      activesupport (= 5.2.0)
-    activerecord (5.2.0)
-      activemodel (= 5.2.0)
-      activesupport (= 5.2.0)
+    activemodel (5.2.3)
+      activesupport (= 5.2.3)
+    activerecord (5.2.3)
+      activemodel (= 5.2.3)
+      activesupport (= 5.2.3)
       arel (>= 9.0)
-    activestorage (5.2.0)
-      actionpack (= 5.2.0)
-      activerecord (= 5.2.0)
+    activestorage (5.2.3)
+      actionpack (= 5.2.3)
+      activerecord (= 5.2.3)
       marcel (~> 0.3.1)
-    activesupport (5.2.0)
+    activesupport (5.2.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -205,18 +205,18 @@ GEM
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
-    rails (5.2.0)
-      actioncable (= 5.2.0)
-      actionmailer (= 5.2.0)
-      actionpack (= 5.2.0)
-      actionview (= 5.2.0)
-      activejob (= 5.2.0)
-      activemodel (= 5.2.0)
-      activerecord (= 5.2.0)
-      activestorage (= 5.2.0)
-      activesupport (= 5.2.0)
+    rails (5.2.3)
+      actioncable (= 5.2.3)
+      actionmailer (= 5.2.3)
+      actionpack (= 5.2.3)
+      actionview (= 5.2.3)
+      activejob (= 5.2.3)
+      activemodel (= 5.2.3)
+      activerecord (= 5.2.3)
+      activestorage (= 5.2.3)
+      activesupport (= 5.2.3)
       bundler (>= 1.3.0)
-      railties (= 5.2.0)
+      railties (= 5.2.3)
       sprockets-rails (>= 2.0.0)
     rails-controller-testing (1.0.4)
       actionpack (>= 5.0.1.x)
@@ -227,12 +227,12 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.2.0)
-      actionpack (= 5.2.0)
-      activesupport (= 5.2.0)
+    railties (5.2.3)
+      actionpack (= 5.2.3)
+      activesupport (= 5.2.3)
       method_source
       rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
+      thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
     rake (12.3.3)
     rb-fsevent (0.10.3)
@@ -372,7 +372,7 @@ DEPENDENCIES
   mysql2 (>= 0.4.4, < 0.6.0)
   omniauth-oauth2 (~> 1.3.1)
   purecss-rails
-  rails (= 5.2.0)
+  rails (= 5.2.3)
   rails-controller-testing
   react-rails (~> 1.10.0)
   rolify