diff --git a/Gemfile.lock b/Gemfile.lock
index d29c2fb..2d49918 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -84,7 +84,7 @@ GEM
     concurrent-ruby (1.2.3)
     connection_pool (2.4.1)
     crass (1.0.6)
-    date (3.3.4)
+    date (3.4.1)
     debug (1.9.2)
       irb (~> 1.10)
       reline (>= 0.3.8)
@@ -156,7 +156,7 @@ GEM
     multi_json (1.15.0)
     mutex_m (0.2.0)
     nenv (0.3.0)
-    net-imap (0.4.10)
+    net-imap (0.4.20)
       date
       net-protocol
     net-pop (0.1.2)
@@ -272,7 +272,7 @@ GEM
     stringio (3.1.0)
     thor (1.3.1)
     tilt (2.3.0)
-    timeout (0.4.1)
+    timeout (0.4.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     webrick (1.8.1)