diff --git a/Gemfile.lock b/Gemfile.lock
index 294eb7e..d9673d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,7 +53,7 @@ GEM
       example_file (~> 0.5.0)
       toys-core (~> 0.15.3)
     content_disposition (1.0.0)
-    date (3.4.1)
+    date (3.5.1)
     declarative (0.0.20)
     diff-lcs (1.6.2)
     diffy (3.4.4)
@@ -182,7 +182,8 @@ GEM
     logger (1.7.0)
     macaddr (1.7.2)
       systemu (~> 2.6.5)
-    mail (2.8.1)
+    mail (2.9.1)
+      logger
       mini_mime (>= 0.1.1)
       net-imap
       net-pop
@@ -197,12 +198,12 @@ GEM
     mutex_m (0.3.0)
     net-http (0.6.0)
       uri
-    net-imap (0.5.9)
+    net-imap (0.6.6)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.2)
+    net-protocol (0.3.0)
       timeout
     net-smtp (0.5.1)
       net-protocol
@@ -364,7 +365,7 @@ GEM
     systemu (2.6.5)
     thor (1.4.0)
     tilt (2.6.1)
-    timeout (0.4.3)
+    timeout (0.6.1)
     toys (0.15.6)
       toys-core (= 0.15.6)
     toys-core (0.15.6)