diff --git a/Gemfile b/Gemfile
index f44efaf..7dc972f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -4,7 +4,7 @@ ruby "2.5.1"
 
 # the most important stuff
 gem "pg"
-gem "rails", "5.2.2.1"
+gem "rails", "5.2.3"
 
 # all other gems
 gem "active_model_serializers"
diff --git a/Gemfile.lock b/Gemfile.lock
index 39b6145..d3ef693 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,25 +1,25 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.2.2.1)
-      actionpack (= 5.2.2.1)
+    actioncable (5.2.3)
+      actionpack (= 5.2.3)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailer (5.2.2.1)
-      actionpack (= 5.2.2.1)
-      actionview (= 5.2.2.1)
-      activejob (= 5.2.2.1)
+    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 (5.2.2.1)
-      actionview (= 5.2.2.1)
-      activesupport (= 5.2.2.1)
+    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 (5.2.2.1)
-      activesupport (= 5.2.2.1)
+    actionview (5.2.3)
+      activesupport (= 5.2.3)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
@@ -29,20 +29,20 @@ GEM
       activemodel (>= 4.1, < 6)
       case_transform (>= 0.2)
       jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
-    activejob (5.2.2.1)
-      activesupport (= 5.2.2.1)
+    activejob (5.2.3)
+      activesupport (= 5.2.3)
       globalid (>= 0.3.6)
-    activemodel (5.2.2.1)
-      activesupport (= 5.2.2.1)
-    activerecord (5.2.2.1)
-      activemodel (= 5.2.2.1)
-      activesupport (= 5.2.2.1)
+    activemodel (5.2.3)
+      activesupport (= 5.2.3)
+    activerecord (5.2.3)
+      activemodel (= 5.2.3)
+      activesupport (= 5.2.3)
       arel (>= 9.0)
-    activestorage (5.2.2.1)
-      actionpack (= 5.2.2.1)
-      activerecord (= 5.2.2.1)
+    activestorage (5.2.3)
+      actionpack (= 5.2.3)
+      activerecord (= 5.2.3)
       marcel (~> 0.3.1)
-    activesupport (5.2.2.1)
+    activesupport (5.2.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -136,14 +136,14 @@ GEM
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
     mimemagic (0.3.3)
-    mini_mime (1.0.1)
+    mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     msgpack (1.2.4)
     multi_json (1.13.1)
     mustache (1.0.5)
     mustermann (1.0.3)
-    nio4r (2.3.1)
+    nio4r (2.4.0)
     nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     parallel (1.12.1)
@@ -168,18 +168,18 @@ GEM
       haml (>= 4.0)
       json
       sinatra (~> 2.0)
-    rails (5.2.2.1)
-      actioncable (= 5.2.2.1)
-      actionmailer (= 5.2.2.1)
-      actionpack (= 5.2.2.1)
-      actionview (= 5.2.2.1)
-      activejob (= 5.2.2.1)
-      activemodel (= 5.2.2.1)
-      activerecord (= 5.2.2.1)
-      activestorage (= 5.2.2.1)
-      activesupport (= 5.2.2.1)
+    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 (= 5.2.2.1)
+      railties (= 5.2.3)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
@@ -189,16 +189,16 @@ GEM
       activesupport (>= 3.2)
       choice (~> 0.2.0)
       ruby-graphviz (~> 1.2)
-    rails-html-sanitizer (1.0.4)
+    rails-html-sanitizer (1.2.0)
       loofah (~> 2.2, >= 2.2.2)
-    railties (5.2.2.1)
-      actionpack (= 5.2.2.1)
-      activesupport (= 5.2.2.1)
+    railties (5.2.3)
+      actionpack (= 5.2.3)
+      activesupport (= 5.2.3)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
-    rake (12.3.2)
+    rake (12.3.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -281,9 +281,9 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    websocket-driver (0.7.0)
+    websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
+    websocket-extensions (0.1.4)
 
 PLATFORMS
   ruby
@@ -310,7 +310,7 @@ DEPENDENCIES
   puma
   rack-cors
   raddocs
-  rails (= 5.2.2.1)
+  rails (= 5.2.3)
   rails-erd
   responders
   rollbar