diff --git a/Gemfile.lock b/Gemfile.lock
index 2a5e432..583ea5d 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 (3.3.3)
+    date (3.5.1)
     drb (2.2.3)
     erb (5.0.3)
     erubi (1.13.1)
@@ -123,12 +123,12 @@ GEM
     mini_mime (1.1.5)
     minitest (5.26.0)
     mutex_m (0.3.0)
-    net-imap (0.3.7)
+    net-imap (0.4.24)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.1)
+    net-protocol (0.2.2)
       timeout
     net-smtp (0.3.3)
       net-protocol
@@ -204,7 +204,7 @@ GEM
     sqlite3 (1.6.3-x86_64-linux)
     stringio (3.1.7)
     thor (1.4.0)
-    timeout (0.4.0)
+    timeout (0.6.1)
     tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)