diff --git a/Gemfile b/Gemfile
index 0f1dc41..6d097d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ gem "cancancan", "~> 1.13"
 gem "mysql2"
 gem "jbuilder", "~> 2.4"
 gem "uglifier", "~> 2.7"
-gem "devise", "~> 3.5"
+gem "devise", "~> 4.7"
 gem "sidekiq", "~> 4.1"
 gem "sidekiq-failures", "~> 0.4"
 gem "sinatra", require: nil
diff --git a/Gemfile.lock b/Gemfile.lock
index 5732f19..cc1e7f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     arel (6.0.3)
     autoprefixer-rails (6.4.0.3)
       execjs
-    bcrypt (3.1.11)
+    bcrypt (3.1.13)
     better_errors (2.1.1)
       coderay (>= 1.0.0)
       erubis (>= 2.6.6)
@@ -93,7 +93,7 @@ GEM
     bourbon (4.2.7)
       sass (~> 3.4)
       thor (~> 0.19)
-    builder (3.2.2)
+    builder (3.2.4)
     cancancan (1.15.0)
     capybara (2.8.1)
       addressable
@@ -116,14 +116,14 @@ GEM
     coffee-script-source (1.10.0)
     concurrent-ruby (1.0.2)
     connection_pool (2.2.0)
+    crass (1.0.6)
     database_cleaner (1.5.3)
     debug_inspector (0.0.2)
-    devise (3.5.10)
+    devise (4.7.1)
       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-lcs (1.2.5)
     erubis (2.7.0)
@@ -170,7 +170,8 @@ GEM
       haml (~> 4.0.0)
       nokogiri (~> 1.6.0)
       ruby_parser (~> 3.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     inherited_resources (1.6.0)
       actionpack (>= 3.2, < 5)
       has_scope (~> 0.6.0.rc)
@@ -186,7 +187,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (5.0.5)
       railties (>= 3.2.16)
-    json (1.8.3)
+    json (1.8.6)
     kaminari (0.17.0)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -196,7 +197,8 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.0.3)
+    loofah (2.4.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.10)
     mail (2.6.4)
@@ -208,14 +210,13 @@ GEM
     mime-types-data (3.2016.0521)
     mimemagic (0.3.0)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.14.0)
     msgpack (1.0.0)
     multi_json (1.12.1)
     mysql2 (0.4.4)
     nenv (0.3.0)
-    nokogiri (1.6.8)
+    nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -235,7 +236,6 @@ GEM
     parallel (1.9.0)
     parallel_tests (2.7.1)
       parallel
-    pkg-config (1.1.7)
     polyamorous (1.3.1)
       activerecord (>= 3.0)
     pry (0.10.4)
@@ -249,7 +249,7 @@ GEM
       pry
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.12)
     rack-mini-profiler (0.10.1)
       rack (>= 1.2.0)
     rack-protection (1.5.3)
@@ -269,12 +269,12 @@ GEM
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
-      activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (4.2.7.1)
       actionpack (= 4.2.7.1)
       activesupport (= 4.2.7.1)
@@ -300,8 +300,9 @@ GEM
     request_store (1.3.1)
     rerun (0.11.0)
       listen (~> 3.0)
-    responders (2.3.0)
-      railties (>= 4.2.0, < 5.1)
+    responders (2.4.1)
+      actionpack (>= 4.2.0, < 6.0)
+      railties (>= 4.2.0, < 6.0)
     responsive_active_admin (0.0.5)
       activeadmin
     rinruby (2.0.3)
@@ -373,8 +374,8 @@ GEM
     therubyracer (0.12.2)
       libv8 (~> 3.16.14.0)
       ref
-    thor (0.19.1)
-    thread_safe (0.3.5)
+    thor (0.20.3)
+    thread_safe (0.3.6)
     tilt (2.0.5)
     transaction_isolation (1.0.3)
       activerecord (>= 3.0.11)
@@ -382,7 +383,7 @@ GEM
       activerecord (>= 3.0.11)
       transaction_isolation (>= 1.0.2)
     trollop (2.1.2)
-    tzinfo (1.2.2)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
     uglifier (2.7.2)
       execjs (>= 0.3.0)
@@ -390,7 +391,7 @@ GEM
     unicorn (5.1.0)
       kgio (~> 2.6)
       raindrops (~> 0.7)
-    warden (1.2.6)
+    warden (1.2.7)
       rack (>= 1.0)
     xpath (2.0.0)
       nokogiri (~> 1.3)
@@ -410,7 +411,7 @@ DEPENDENCIES
   capybara
   coffee-rails
   database_cleaner
-  devise (~> 3.5)
+  devise (~> 4.7)
   fabrication
   faker
   flamegraph