diff --git a/Gemfile.lock b/Gemfile.lock
index a89311714..da2a2880c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -196,7 +196,7 @@ GEM
       rexml
     crass (1.0.6)
     daemons (1.4.1)
-    date (3.3.4)
+    date (3.4.1)
     debugger-ruby_core_source (1.3.8)
     declarative (0.0.20)
     deep_cloneable (3.2.0)
@@ -436,7 +436,7 @@ GEM
     net-http-digest_auth (1.4.1)
     net-http-persistent (4.0.1)
       connection_pool (~> 2.2)
-    net-imap (0.4.10)
+    net-imap (0.4.19)
       date
       net-protocol
     net-pop (0.1.2)
@@ -831,7 +831,7 @@ GEM
       rack (>= 1, < 3)
     thor (1.3.1)
     thread_safe (0.3.6)
-    timeout (0.4.1)
+    timeout (0.4.3)
     tins (1.31.0)
       sync
     to_regexp (0.2.1)