diff --git a/Gemfile b/Gemfile
index 1bec0fd9..4ed140aa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -117,7 +117,7 @@ group :development, :test, :assets do
   # Use CoffeeScript for .coffee assets and views
   gem 'coffee-rails'
   # Use SASS for stylesheets
-  gem 'sass-rails'
+  gem 'sassc-rails'
 
   # Use jquery and jquery-ui as the JavaScript library
   gem 'jquery-ui-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index e3c75d2e..85726b39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,7 +117,7 @@ GEM
     ffi (1.9.25)
     flag-icons-rails (3.1.0)
       sass (~> 3.2)
-    font-awesome-sass (5.0.13)
+    font-awesome-sass (5.2.0)
       sassc (>= 1.11)
     formatador (0.2.5)
     formtastic (3.1.5)
@@ -200,7 +200,7 @@ GEM
     i18n-active_record (0.2.2)
       i18n (>= 0.5.0)
     icalendar (2.4.1)
-    ice_cube (0.16.2)
+    ice_cube (0.16.3)
     inherited_resources (1.8.0)
       actionpack (>= 4.2, <= 5.2)
       has_scope (~> 0.6)
@@ -287,7 +287,7 @@ GEM
     rack (2.0.5)
     rack-livereload (0.3.17)
       rack
-    rack-test (1.0.0)
+    rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.0)
       actioncable (= 5.2.0)
@@ -306,7 +306,7 @@ GEM
     rails-assets-jquery-sparkline (2.1.3)
     rails-assets-jquery-visible (1.2.0)
       rails-assets-jquery (> 1.6.0)
-    rails-assets-leaflet (1.3.1)
+    rails-assets-leaflet (1.3.3)
     rails-assets-leaflet.markercluster (1.3.0)
       rails-assets-leaflet (>= 1.0.3)
     rails-controller-testing (1.0.2)
@@ -345,7 +345,7 @@ GEM
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
-    rubocop (0.58.1)
+    rubocop (0.58.2)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
       parser (>= 2.5, != 2.5.1.1)
@@ -358,23 +358,24 @@ GEM
     ruby_parser (3.11.0)
       sexp_processor (~> 4.9)
     rubyzip (1.2.1)
-    sass (3.5.6)
+    sass (3.5.7)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sass-rails (5.0.7)
-      railties (>= 4.0.0, < 6)
-      sass (~> 3.1)
-      sprockets (>= 2.8, < 4.0)
-      sprockets-rails (>= 2.0, < 4.0)
-      tilt (>= 1.1, < 3)
     sassc (1.12.1)
       ffi (~> 1.9.6)
       sass (>= 3.3.0)
+    sassc-rails (1.3.0)
+      railties (>= 4.0.0)
+      sass
+      sassc (~> 1.9)
+      sprockets (> 2.11)
+      sprockets-rails
+      tilt
     sdoc (1.0.0)
       rdoc (>= 5.0)
-    selenium-webdriver (3.13.0)
+    selenium-webdriver (3.13.1)
       childprocess (~> 0.5)
       rubyzip (~> 1.2)
     sexp_processor (4.11.0)
@@ -427,7 +428,7 @@ GEM
       simple_oauth (~> 0.3.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
-    uglifier (4.1.15)
+    uglifier (4.1.16)
       execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
@@ -499,7 +500,7 @@ DEPENDENCIES
   rails-assets-leaflet.markercluster!
   rails-controller-testing
   rails-i18n
-  sass-rails
+  sassc-rails
   sdoc
   selenium-webdriver
   simple_calendar