diff --git a/Gemfile.lock b/Gemfile.lock
index 663032d..d5179f9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -44,7 +44,7 @@ GEM
       public_suffix (>= 2.0.2, < 4.0)
     arel (6.0.4)
     ast (2.4.0)
-    autoprefixer-rails (7.1.5)
+    autoprefixer-rails (9.6.1.1)
       execjs
     aws-eventstream (1.0.1)
     aws-partitions (1.94.0)
@@ -638,9 +638,9 @@ GEM
     bcrypt (3.1.11)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
-    bootstrap-sass (3.3.7)
+    bootstrap-sass (3.4.1)
       autoprefixer-rails (>= 5.2.1)
-      sass (>= 3.3.4)
+      sassc (>= 2.0.0)
     bootstrap3-datetimepicker-rails (4.17.47)
       momentjs-rails (>= 2.8.1)
     builder (3.2.3)
@@ -694,7 +694,7 @@ GEM
       railties (>= 3.0.0)
     faker (1.7.3)
       i18n (~> 0.5)
-    ffi (1.9.18)
+    ffi (1.11.1)
     fuubar (2.2.0)
       rspec-core (~> 3.0)
       ruby-progressbar (~> 1.4)
@@ -847,9 +847,9 @@ GEM
       thor (>= 0.18.1, < 2.0)
     rainbow (3.0.0)
     rake (12.1.0)
-    rb-fsevent (0.10.2)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     rdoc (4.3.0)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
@@ -881,7 +881,7 @@ GEM
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.9.0)
     rubyzip (1.2.1)
-    sass (3.5.2)
+    sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
@@ -892,6 +892,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     sdoc (0.4.2)
       json (~> 1.7, >= 1.7.7)
       rdoc (~> 4.0)