diff --git a/Gemfile.lock b/Gemfile.lock
index 8842ce36f..5945e5905 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
     autoprefixer-rails (5.2.1.3)
       execjs
       json
-    bcrypt (3.1.12)
+    bcrypt (3.1.16)
     bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
       sassc (>= 2.0.0)
@@ -107,17 +107,16 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.1.9)
     connection_pool (2.2.2)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
     crass (1.0.6)
-    devise (3.5.10)
+    devise (4.8.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
-      railties (>= 3.2.6, < 5)
+      railties (>= 4.1.0)
       responders
-      thread_safe (~> 0.1)
       warden (~> 1.2.3)
     diff-display (0.0.1)
     diff-lcs (1.3)
@@ -202,7 +201,7 @@ GEM
       kaminari-core (= 1.2.1)
     kaminari-core (1.2.1)
     key_struct (0.4.2)
-    loofah (2.9.0)
+    loofah (2.12.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -268,13 +267,13 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.2.11.3)
       sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
+    rails-deprecated_sanitizer (1.0.4)
       activesupport (>= 4.2.0.alpha)
     rails-dom-testing (1.0.9)
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.3.0)
+    rails-html-sanitizer (1.4.2)
       loofah (~> 2.3)
     rails3-jquery-autocomplete (1.0.15)
       rails (>= 3.2)