diff --git a/Gemfile b/Gemfile
index 5247667a4..658fb76c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "rails", "5.1.4"
+gem "rails", "5.1.6"
 
 # Legacy Rails features, remove me!
 # responders (class level)
diff --git a/Gemfile.lock b/Gemfile.lock
index f3d5c2bfd..7dee030be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,25 +2,25 @@ GEM
   remote: https://rubygems.org/
   remote: https://rails-assets.org/
   specs:
-    actioncable (5.1.4)
-      actionpack (= 5.1.4)
+    actioncable (5.1.6)
+      actionpack (= 5.1.6)
       nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
+    actionmailer (5.1.6)
+      actionpack (= 5.1.6)
+      actionview (= 5.1.6)
+      activejob (= 5.1.6)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.1.4)
-      actionview (= 5.1.4)
-      activesupport (= 5.1.4)
+    actionpack (5.1.6)
+      actionview (= 5.1.6)
+      activesupport (= 5.1.6)
       rack (~> 2.0)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.1.4)
-      activesupport (= 5.1.4)
+    actionview (5.1.6)
+      activesupport (= 5.1.6)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
@@ -28,20 +28,20 @@ GEM
     active_model_serializers (0.9.7)
       activemodel (>= 3.2)
       concurrent-ruby (~> 1.0)
-    activejob (5.1.4)
-      activesupport (= 5.1.4)
+    activejob (5.1.6)
+      activesupport (= 5.1.6)
       globalid (>= 0.3.6)
-    activemodel (5.1.4)
-      activesupport (= 5.1.4)
-    activerecord (5.1.4)
-      activemodel (= 5.1.4)
-      activesupport (= 5.1.4)
+    activemodel (5.1.6)
+      activesupport (= 5.1.6)
+    activerecord (5.1.6)
+      activemodel (= 5.1.6)
+      activesupport (= 5.1.6)
       arel (~> 8.0)
     activerecord-import (0.20.1)
       activerecord (>= 3.2)
-    activesupport (5.1.4)
+    activesupport (5.1.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     acts-as-taggable-on (5.0.0)
@@ -245,7 +245,7 @@ GEM
     gitlab (4.2.0)
       httparty
       terminal-table
-    globalid (0.4.0)
+    globalid (0.4.1)
       activesupport (>= 4.2.0)
     gon (6.1.0)
       actionpack (>= 3.0)
@@ -306,7 +306,7 @@ GEM
     httparty (0.15.6)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
-    i18n (0.9.5)
+    i18n (1.0.0)
       concurrent-ruby (~> 1.0)
     i18n-inflector (2.6.7)
       i18n (>= 0.4.1)
@@ -360,14 +360,14 @@ GEM
       multi_json (~> 1.10)
     logging-rails (0.6.0)
       logging (>= 1.8)
-    loofah (2.2.0)
+    loofah (2.2.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
     macaddr (1.7.1)
       systemu (~> 2.6.2)
-    mail (2.6.6)
-      mime-types (>= 1.16, < 4)
+    mail (2.7.0)
+      mini_mime (>= 0.1.1)
     markdown-it-html5-embed (1.0.0)
     markerb (1.1.0)
     memoizable (0.4.2)
@@ -390,7 +390,7 @@ GEM
     mysql2 (0.4.10)
     naught (1.1.0)
     nenv (0.3.0)
-    nio4r (2.1.0)
+    nio4r (2.3.0)
     nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     notiffany (0.1.1)
@@ -494,19 +494,19 @@ GEM
     rack-rewrite (1.5.1)
     rack-ssl (1.4.1)
       rack
-    rack-test (0.8.3)
+    rack-test (1.0.0)
       rack (>= 1.0, < 3)
-    rails (5.1.4)
-      actioncable (= 5.1.4)
-      actionmailer (= 5.1.4)
-      actionpack (= 5.1.4)
-      actionview (= 5.1.4)
-      activejob (= 5.1.4)
-      activemodel (= 5.1.4)
-      activerecord (= 5.1.4)
-      activesupport (= 5.1.4)
+    rails (5.1.6)
+      actioncable (= 5.1.6)
+      actionmailer (= 5.1.6)
+      actionpack (= 5.1.6)
+      actionview (= 5.1.6)
+      activejob (= 5.1.6)
+      activemodel (= 5.1.6)
+      activerecord (= 5.1.6)
+      activesupport (= 5.1.6)
       bundler (>= 1.3.0)
-      railties (= 5.1.4)
+      railties (= 5.1.6)
       sprockets-rails (>= 2.0.0)
     rails-assets-autosize (4.0.0)
     rails-assets-backbone (1.3.3)
@@ -561,24 +561,24 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
     rails-i18n (5.1.1)
       i18n (>= 0.7, < 2)
       railties (>= 5.0, < 6)
     rails-timeago (2.16.0)
       actionpack (>= 3.1)
       activesupport (>= 3.1)
-    railties (5.1.4)
-      actionpack (= 5.1.4)
-      activesupport (= 5.1.4)
+    railties (5.1.6)
+      actionpack (= 5.1.6)
+      activesupport (= 5.1.6)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rainbow (2.2.2)
       rake
     raindrops (0.19.0)
-    rake (12.3.0)
+    rake (12.3.1)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -755,7 +755,7 @@ GEM
       hashdiff
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.3)
     will_paginate (3.1.6)
     xpath (2.1.0)
       nokogiri (~> 1.3)
@@ -845,7 +845,7 @@ DEPENDENCIES
   rack-piwik (= 0.3.0)
   rack-rewrite (= 1.5.1)
   rack-ssl (= 1.4.1)
-  rails (= 5.1.4)
+  rails (= 5.1.6)
   rails-assets-autosize (= 4.0.0)!
   rails-assets-backbone (= 1.3.3)!
   rails-assets-blueimp-gallery (= 2.27.0)!