diff --git a/Gemfile.lock b/Gemfile.lock
index 52efcdb..87f4718 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,6 +45,7 @@ GEM
       tzinfo (~> 1.1)
     arel (6.0.2)
     builder (3.2.2)
+    crass (1.0.6)
     diff-lcs (1.2.5)
     docile (1.1.5)
     erubis (2.7.0)
@@ -53,15 +54,16 @@ GEM
       activesupport (>= 4.1.0)
     i18n (0.7.0)
     json (1.8.3)
-    loofah (2.0.2)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
     mime-types (2.6.1)
-    mini_portile (0.6.2)
+    mini_portile2 (2.1.0)
     minitest (5.7.0)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     rack (1.6.4)
     rack-test (0.6.3)
       rack (>= 1.0)