diff --git a/Gemfile.lock b/Gemfile.lock
index 2c82dd0..30650f7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,18 +7,18 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    mail (2.5.4)
+    mail (2.5.5)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    mime-types (1.23)
-    polyglot (0.3.3)
+    mime-types (1.25.1)
+    polyglot (0.3.5)
     rack (1.5.2)
     rack-test (0.6.2)
       rack (>= 1.0)
     rake (10.1.0)
     tilt (1.4.1)
     tmail (1.2.7.1)
-    treetop (1.4.14)
+    treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)