diff --git a/Gemfile b/Gemfile
index 08507c1..18c193c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -45,7 +45,7 @@ gem 'foreman'
 gem 'octokit'
 
 # Use bootstrap as the style framework
-gem 'bootstrap-sass', '~> 3.3.1'
+gem 'bootstrap-sass', '~> 3.4.1'
 gem 'sass-rails', '>= 3.2'
 
 # Bootstrap helpers
diff --git a/Gemfile.lock b/Gemfile.lock
index ae751e1..14023fe 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,7 +135,7 @@ GEM
     angularjs-rails (1.5.0)
     angularjs-rails-resource (1.1.1)
     arel (6.0.4)
-    autoprefixer-rails (6.3.6)
+    autoprefixer-rails (9.7.3)
       execjs
     axiom-types (0.1.1)
       descendants_tracker (~> 0.0.4)
@@ -148,9 +148,9 @@ GEM
       rack (>= 0.9.0)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
-    bootstrap-sass (3.3.6)
+    bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
-      sass (>= 3.3.4)
+      sassc (>= 2.0.0)
     bourbon (4.2.6)
       sass (~> 3.4)
       thor (~> 0.19)
@@ -179,9 +179,10 @@ GEM
       request_store (~> 1.0)
     equalizer (0.0.11)
     erubis (2.7.0)
-    execjs (2.6.0)
+    execjs (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
+    ffi (1.11.3)
     foreman (0.78.0)
       thor (~> 0.19.1)
     globalid (0.4.2)
@@ -288,6 +289,9 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (12.3.2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     redcarpet (3.3.4)
     redis (4.0.1)
     redis-actionpack (5.0.2)
@@ -326,13 +330,19 @@ GEM
       rspec-mocks (~> 3.6.0)
       rspec-support (~> 3.6.0)
     rspec-support (3.6.0)
-    sass (3.4.22)
+    sass (3.7.4)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
     sass-rails (5.0.4)
       railties (>= 4.0.0, < 5.0)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     sawyer (0.7.0)
       addressable (>= 2.3.5, < 2.5)
       faraday (~> 0.8, < 0.10)
@@ -396,7 +406,7 @@ DEPENDENCIES
   angularjs-rails-resource (~> 1.1.1)
   better_errors
   binding_of_caller
-  bootstrap-sass (~> 3.3.1)
+  bootstrap-sass (~> 3.4.1)
   bourbon
   bundler
   cancancan!