diff --git a/Gemfile b/Gemfile
index acf6be1..7ac5d27 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,7 @@ end
 gem 'rest-client'
 gem "oauth2"
 gem 'simple_form'
-gem 'bootstrap', '~> 4.0.0'
+gem 'bootstrap', '~> 4.3.1'
 gem 'jquery-rails'
 gem 'mini_racer'
 gem "cancan"
diff --git a/Gemfile.lock b/Gemfile.lock
index 0731eea..eaa97c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,13 +41,13 @@ GEM
     addressable (2.7.0)
       public_suffix (>= 2.0.2, < 5.0)
     arel (8.0.0)
-    autoprefixer-rails (9.7.3)
+    autoprefixer-rails (9.7.4)
       execjs
     bindex (0.8.1)
-    bootstrap (4.0.0)
-      autoprefixer-rails (>= 6.0.3)
-      popper_js (>= 1.12.9, < 2)
-      sass (>= 3.5.2)
+    bootstrap (4.3.1)
+      autoprefixer-rails (>= 9.1.0)
+      popper_js (>= 1.14.3, < 2)
+      sassc-rails (>= 2.0.0)
     builder (3.2.4)
     byebug (11.0.1)
     cancan (1.6.10)
@@ -76,7 +76,7 @@ GEM
     execjs (2.7.0)
     faraday (1.0.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.11.3)
+    ffi (1.12.1)
     font-awesome-rails (4.7.0.5)
       railties (>= 3.2, < 6.1)
     globalid (0.4.2)
@@ -194,6 +194,14 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
     selenium-webdriver (3.142.7)
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
@@ -239,7 +247,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bootstrap (~> 4.0.0)
+  bootstrap (~> 4.3.1)
   byebug
   cancan
   capybara (>= 2.15)