diff --git a/Gemfile b/Gemfile
index aee41a8..c40f752 100644
--- a/Gemfile
+++ b/Gemfile
@@ -41,7 +41,7 @@ gem 'haml'
 gem 'protected_attributes'
 
 
-gem 'bootstrap-sass', '~> 3.2.0'
+gem 'bootstrap-sass', '~> 3.4.1'
 gem 'autoprefixer-rails'
 gem 'less-rails'
 gem 'therubyracer'
diff --git a/Gemfile.lock b/Gemfile.lock
index 0bf35b7..c853a1c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,8 +41,9 @@ GEM
     arel (6.0.4)
     autoprefixer-rails (10.0.1.3)
       execjs
-    bootstrap-sass (3.2.0.4)
-      sass (~> 3.2)
+    bootstrap-sass (3.4.1)
+      autoprefixer-rails (>= 5.2.1)
+      sassc (>= 2.0.0)
     builder (3.2.4)
     byebug (11.1.3)
     capybara (3.33.0)
@@ -233,6 +234,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     simplecov (0.19.1)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -269,7 +272,7 @@ PLATFORMS
 
 DEPENDENCIES
   autoprefixer-rails
-  bootstrap-sass (~> 3.2.0)
+  bootstrap-sass (~> 3.4.1)
   byebug
   capybara
   coffee-rails (~> 4.1.0)