diff --git a/Gemfile b/Gemfile
index cf9bb59..d10e396 100644
--- a/Gemfile
+++ b/Gemfile
@@ -17,7 +17,7 @@ group :assets do
 end
 
 # bootstrap in sass in rails
-gem 'bootstrap-sass', '~> 3.1.1.1'
+gem 'bootstrap-sass', '~> 3.4.1'
 
 # replaces glyphicons
 gem 'font-awesome-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index fbd6e56..7500f24 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,13 +34,16 @@ GEM
     arel (3.0.3)
     auto_strip_attributes (2.1.0)
       activerecord (>= 3.0)
+    autoprefixer-rails (9.7.4)
+      execjs
     better_errors (1.1.0)
       coderay (>= 1.0.0)
       erubis (>= 2.6.6)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
-    bootstrap-sass (3.1.1.1)
-      sass (~> 3.2)
+    bootstrap-sass (3.4.1)
+      autoprefixer-rails (>= 5.2.1)
+      sassc (>= 2.0.0)
     bootstrap-wysihtml5-rails (0.3.3.8)
       railties (>= 3.0)
     builder (3.0.4)
@@ -98,6 +101,7 @@ GEM
       multi_json (~> 1.0)
     faraday (0.15.2)
       multipart-post (>= 1.2, < 3)
+    ffi (1.12.2)
     font-awesome-rails (4.0.3.2)
       railties (>= 3.2, < 5.0)
     grit (2.5.0)
@@ -217,6 +221,9 @@ GEM
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
     rake (12.3.1)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     rdoc (3.12.2)
       json (~> 1.4)
     rest-client (2.0.1)
@@ -226,11 +233,17 @@ GEM
     rinku (1.7.2)
     rmagick (2.13.2)
     ruby-openid (2.7.0)
-    sass (3.2.1)
+    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 (3.2.5)
       railties (~> 3.2.0)
       sass (>= 3.1.10)
       tilt (~> 1.3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     slop (3.6.0)
     sprockets (2.2.3)
       hike (~> 1.2)
@@ -269,7 +282,7 @@ DEPENDENCIES
   auto_strip_attributes (~> 2.0)
   better_errors
   binding_of_caller
-  bootstrap-sass (~> 3.1.1.1)
+  bootstrap-sass (~> 3.4.1)
   bootstrap-wysihtml5-rails
   capatross!
   capistrano