diff --git a/Gemfile.lock b/Gemfile.lock
index 18fddea..5cce269 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,17 +25,34 @@ GEM
     concurrent-ruby-ext (1.1.5)
       concurrent-ruby (= 1.1.5)
     connection_pool (2.2.2)
+    date (3.5.1)
+    date (3.5.1-java)
     ffi (1.11.1)
     ffi (1.11.1-java)
-    mail (2.7.1)
+    logger (1.7.0)
+    mail (2.9.1)
+      logger
       mini_mime (>= 0.1.1)
-    mini_mime (1.0.2)
+      net-imap
+      net-pop
+      net-smtp
+    mini_mime (1.1.5)
     msgpack (1.3.1)
     msgpack (1.3.1-java)
     mysql2 (0.5.2)
+    net-imap (0.3.10)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.3.0)
+      timeout
+    net-smtp (0.5.1)
+      net-protocol
     optimist (3.0.0)
     ruby-progressbar (1.10.1)
     stackprof (0.2.12)
+    timeout (0.6.1)
 
 PLATFORMS
   java