diff --git a/Gemfile b/Gemfile
index ea615cf..44606d9 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 source 'https://rubygems.org'
 
 gem 'autoprefixer-rails', '~>8.1.0' # lock at 8.1.0
-gem 'bootstrap-sass', '~> 3.3.7' # lock at 3.3.7
+gem 'bootstrap-sass', '~> 3.4.1' # lock at 3.3.7
 gem 'bootstrap_form', '~> 2.7.0'
 gem 'coffee-rails', '4.2.2'
 gem 'coveralls', '~> 0.8.23', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index c0778bd..513a081 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,9 +45,9 @@ GEM
     ast (2.3.0)
     autoprefixer-rails (8.1.0.1)
       execjs
-    bootstrap-sass (3.3.7)
+    bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
-      sass (>= 3.3.4)
+      sassc (>= 2.0.0)
     bootstrap_form (2.7.0)
     builder (3.2.3)
     capistrano (3.10.2)
@@ -97,7 +97,7 @@ GEM
     fabrication (2.20.1)
     faker (1.9.3)
       i18n (>= 0.7)
-    ffi (1.9.25)
+    ffi (1.12.2)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     haml (5.0.1)
@@ -232,7 +232,7 @@ GEM
       rake
     rake (12.3.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     rdoc (6.0.1)
     regexp_parser (1.3.0)
@@ -265,7 +265,7 @@ GEM
     ruby-progressbar (1.9.0)
     ruby_parser (3.9.0)
       sexp_processor (~> 4.1)
-    sass (3.7.3)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -276,6 +276,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     sdoc (1.0.0)
       rdoc (>= 5.0)
     sexp_processor (4.9.0)
@@ -329,7 +331,7 @@ PLATFORMS
 DEPENDENCIES
   activerecord-postgresql-adapter
   autoprefixer-rails (~> 8.1.0)
-  bootstrap-sass (~> 3.3.7)
+  bootstrap-sass (~> 3.4.1)
   bootstrap_form (~> 2.7.0)
   capistrano (~> 3.10.2)
   capistrano-bundler (~> 1.5.0)