diff --git a/Gemfile.lock b/Gemfile.lock
index 05c7c6b..ab0aace 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -90,7 +90,7 @@ GEM
       xpath (~> 3.2)
     concurrent-ruby (1.3.4)
     crass (1.0.6)
-    date (3.4.0)
+    date (3.5.1)
     delayed_job (4.1.13)
       activesupport (>= 3.0, < 9.0)
     delayed_job_active_record (4.1.11)
@@ -136,7 +136,7 @@ GEM
     msgpack (1.7.5)
     mustermann (3.0.3)
       ruby2_keywords (~> 0.0.1)
-    net-imap (0.4.18)
+    net-imap (0.4.24)
       date
       net-protocol
     net-pop (0.1.2)
@@ -253,7 +253,7 @@ GEM
     stackprof (0.2.27)
     thor (1.3.2)
     tilt (2.4.0)
-    timeout (0.4.2)
+    timeout (0.6.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     websocket (1.2.11)