diff --git a/Gemfile.lock b/Gemfile.lock
index dfc1162..9602e51 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,10 +80,10 @@ GEM
       actionpack (>= 3.1)
       less (~> 2.3.1)
     libv8 (3.11.8.17)
-    mail (2.5.4)
+    mail (2.5.5)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    mime-types (1.23)
+    mime-types (1.25.1)
     minitest (4.7.4)
     multi_json (1.7.4)
     multipart-post (1.2.0)
@@ -99,7 +99,7 @@ GEM
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
     pg (0.15.1)
-    polyglot (0.3.3)
+    polyglot (0.3.5)
     rack (1.5.2)
     rack-test (0.6.2)
       rack (>= 1.0)
@@ -167,7 +167,7 @@ GEM
     thread_safe (0.1.0)
       atomic
     tilt (1.4.1)
-    treetop (1.4.12)
+    treetop (1.4.15)
       polyglot
       polyglot (>= 0.3.1)
     turbolinks (1.1.1)