diff --git a/Gemfile.lock b/Gemfile.lock
index 385422b..ff317ef 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -97,7 +97,7 @@ GEM
     concurrent-ruby (1.3.5)
     connection_pool (2.5.4)
     crass (1.0.6)
-    date (3.4.1)
+    date (3.5.1)
     diff-lcs (1.5.1)
     drb (2.2.3)
     erubi (1.13.1)
@@ -124,7 +124,7 @@ GEM
     marcel (1.0.4)
     mini_mime (1.1.5)
     minitest (5.25.5)
-    net-imap (0.5.7)
+    net-imap (0.5.14)
       date
       net-protocol
     net-pop (0.1.2)
@@ -248,7 +248,7 @@ GEM
     stringio (3.1.2)
     thor (1.3.2)
     timecop (0.9.10)
-    timeout (0.4.3)
+    timeout (0.6.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.6.0)