diff --git a/Gemfile.lock b/Gemfile.lock
index 6d0aee0..e46e4a4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,6 +94,7 @@ GEM
     connection_pool (2.2.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
+    crass (1.0.6)
     curb (0.9.3)
     database_cleaner (1.5.1)
     debug_inspector (0.0.2)
@@ -137,7 +138,8 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.0.3)
+    loofah (2.4.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)