diff --git a/Gemfile.lock b/Gemfile.lock
index a825fc6..69ca04b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     concurrent-ruby (1.3.5)
     connection_pool (2.5.3)
     crass (1.0.6)
-    date (3.4.1)
+    date (3.5.1)
     drb (2.2.3)
     erubi (1.13.0)
     globalid (1.2.1)
@@ -114,7 +114,7 @@ GEM
     minitest (5.25.5)
     mocha (2.4.0)
       ruby2_keywords (>= 0.0.5)
-    net-imap (0.5.7)
+    net-imap (0.5.14)
       date
       net-protocol
     net-pop (0.1.2)
@@ -192,7 +192,7 @@ GEM
       mini_portile2 (~> 2.8.0)
     stringio (3.1.2)
     thor (1.4.0)
-    timeout (0.4.3)
+    timeout (0.6.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     uri (1.0.3)