diff --git a/Gemfile.lock b/Gemfile.lock
index 1a33af9..a457ebb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,6 +107,7 @@ GEM
       railties (>= 3.0.0)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
+    ffi (1.11.1)
     flutie (2.0.0)
     formulaic (0.4.1)
       activesupport
@@ -191,6 +192,9 @@ GEM
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (12.3.3)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     recipient_interceptor (0.1.2)
       mail
     refills (0.2.0)
@@ -213,8 +217,12 @@ GEM
       rspec-support (~> 3.8.0)
     rspec-support (3.8.2)
     safe_yaml (1.0.4)
-    sass (3.4.24)
-    sass-rails (5.0.6)
+    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)
@@ -247,7 +255,7 @@ GEM
       virtus
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.7)
+    tilt (2.0.9)
     timecop (0.9.1)
     title (0.0.7)
       i18n