diff --git a/Gemfile.lock b/Gemfile.lock
index 606d684..805e441 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,6 +80,7 @@ GEM
     commonjs (0.2.7)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
+    crass (1.0.6)
     diff-lcs (1.3)
     dotenv (2.2.1)
     dotenv-rails (2.2.1)
@@ -110,7 +111,8 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.6)
       mime-types (>= 1.16, < 4)