diff --git a/Gemfile b/Gemfile
index 5bc54767..9e5b6de8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -80,7 +80,7 @@ gem 'uglifier'
 gem 'sass-rails', '>= 3.2'
 gem 'jquery-rails'
 gem 'jquery-ui-rails'
-gem 'bootstrap-sass', '~> 3.3.3'
+gem 'bootstrap-sass', '~> 3.4.1'
 gem 'bootstrap_form'
 gem 'bootstrap-material-design'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index c03650ce..05369db6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,9 +55,8 @@ GEM
       activesupport (>= 3.2)
       request_store (~> 1.0)
       scrypt (>= 1.2, < 3.0)
-    autoprefixer-rails (6.1.2)
+    autoprefixer-rails (9.6.5)
       execjs
-      json
     autotest-rails (4.2.1)
       ZenTest (~> 4.5)
     bcrypt (3.1.10)
@@ -70,9 +69,9 @@ GEM
       railties (>= 3.0)
     bootstrap-material-design (0.2.2)
       bootstrap-sass (~> 3.0)
-    bootstrap-sass (3.3.6)
+    bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
-      sass (>= 3.3.4)
+      sassc (>= 2.0.0)
     bootstrap_form (2.3.0)
     builder (3.2.2)
     bullet (4.14.10)
@@ -114,7 +113,7 @@ GEM
     exception_notification (4.1.1)
       actionmailer (>= 3.0.4)
       activesupport (>= 3.0.4)
-    execjs (2.6.0)
+    execjs (2.7.0)
     factory_girl (4.5.0)
       activesupport (>= 3.0.0)
     factory_girl_rails (4.5.0)
@@ -154,7 +153,7 @@ 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 (0.15.1)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
@@ -222,6 +221,9 @@ GEM
       thor (>= 0.18.1, < 2.0)
     raindrops (0.15.0)
     rake (10.4.2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     ref (2.0.0)
     request_store (1.2.1)
     rspec (3.4.0)
@@ -249,13 +251,19 @@ GEM
       sexp_processor (~> 4.1)
     rubycas-client (2.3.9)
       activesupport
-    sass (3.4.19)
+    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)
     scrypt (2.0.2)
       ffi-compiler (>= 0.0.2)
       rake
@@ -315,7 +323,7 @@ DEPENDENCIES
   binding_of_caller
   bootstrap-datepicker-rails
   bootstrap-material-design
-  bootstrap-sass (~> 3.3.3)
+  bootstrap-sass (~> 3.4.1)
   bootstrap_form
   bullet
   byebug