diff --git a/Gemfile.lock b/Gemfile.lock
index e693a26..44db5f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,16 +38,16 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     arel (8.0.0)
-    autoprefixer-rails (9.6.5)
-      execjs
+    autoprefixer-rails (10.4.7.0)
+      execjs (~> 2)
     bcrypt (3.1.13)
     bindex (0.8.1)
-    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 (4.3.0)
       actionpack (>= 5.0)
       activemodel (>= 5.0)
@@ -123,7 +123,7 @@ GEM
       capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
-    public_suffix (4.0.1)
+    public_suffix (5.0.0)
     puma (3.12.1)
     rack (2.0.7)
     rack-test (1.1.0)
@@ -193,6 +193,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.4.0)
+      ffi (~> 1.9)
     selenium-webdriver (3.142.6)
       childprocess (>= 0.5, < 4.0)
       rubyzip (>= 1.2.2)
@@ -235,7 +237,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bootstrap-sass (~> 3.3.6)
+  bootstrap-sass (~> 3.4.1)
   bootstrap_form
   byebug
   capybara (>= 2.15)