diff --git a/Gemfile b/Gemfile
index 8fcbab6..c93e85d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem 'coffee-rails', '~> 4.2'
 gem 'turbolinks', '~> 5'
 gem 'jbuilder', '~> 2.5'
 gem 'bootsnap', '>= 1.1.0', require: false
-gem 'bootstrap', '~> 4.0.0.alpha6'
+gem 'bootstrap', '~> 4.3.1'
 gem 'devise', '~> 4.7', '>= 4.7.2'
 gem 'friendly_id', '~> 5.3'
 gem 'hirb', '~> 0.7.3'
diff --git a/Gemfile.lock b/Gemfile.lock
index ff8613e..05464c5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,10 +73,10 @@ GEM
     bindex (0.8.1)
     bootsnap (1.5.1)
       msgpack (~> 1.0)
-    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 (11.1.3)
     carrierwave (2.1.0)
@@ -251,6 +251,14 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    sassc-rails (2.1.2)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
@@ -295,7 +303,7 @@ PLATFORMS
 DEPENDENCIES
   Smith_View_Tool!
   bootsnap (>= 1.1.0)
-  bootstrap (~> 4.0.0.alpha6)
+  bootstrap (~> 4.3.1)
   byebug
   carrierwave (~> 2.1)
   carrierwave-aws (~> 1.5)