diff --git a/Gemfile b/Gemfile
index 21e7bae..ec2a3a2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'omniauth-shibboleth', '~> 1.3.0'
 gem 'pg', '0.20.0' # lock at 0.20.0
 # rails 5.1 requires money-rails upgrades which broken tests
 gem 'rails', '4.2.11.1'
-gem 'sass-rails', '5.0.7'
+gem 'sass-rails', '6.0.0'
 # bundle exec rake doc:rails generates the API under doc/api.
 gem 'sdoc', '~> 1.0.0', group: :doc
 gem 'turbolinks', '5.2.1'
diff --git a/Gemfile.lock b/Gemfile.lock
index 8cb319c..48eba3a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
     fabrication (2.20.1)
     faker (1.9.3)
       i18n (>= 0.7)
-    ffi (1.9.25)
+    ffi (1.12.2)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     haml (5.0.1)
@@ -232,7 +232,7 @@ GEM
       rake
     rake (12.3.3)
     rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     rdoc (6.0.1)
     regexp_parser (1.3.0)
@@ -265,17 +265,21 @@ GEM
     ruby-progressbar (1.9.0)
     ruby_parser (3.9.0)
       sexp_processor (~> 4.1)
-    sass (3.7.3)
+    sass (3.7.4)
       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)
+    sass-rails (6.0.0)
+      sassc-rails (~> 2.1, >= 2.1.1)
+    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
     sdoc (1.0.0)
       rdoc (>= 5.0)
     sexp_processor (4.9.0)
@@ -288,7 +292,7 @@ GEM
     simplecov-html (0.10.2)
     spring (2.0.2)
       activesupport (>= 4.2)
-    sprockets (3.7.2)
+    sprockets (4.0.0)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -304,7 +308,7 @@ GEM
       tins (~> 1.0)
     thor (1.0.1)
     thread_safe (0.3.6)
-    tilt (2.0.8)
+    tilt (2.0.10)
     tins (1.20.2)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
@@ -364,7 +368,7 @@ DEPENDENCIES
   rspec-rails (~> 3.8.2)
   rubocop (~> 0.49.1)
   rubocop-rspec (~> 1.16.0)
-  sass-rails (= 5.0.7)
+  sass-rails (= 6.0.0)
   sdoc (~> 1.0.0)
   shoulda-matchers (= 2.8.0)
   simplecov (~> 0.16.1)