diff --git a/Gemfile.lock b/Gemfile.lock
index 300c8f6..d12578d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -101,7 +101,7 @@ GEM
     concurrent-ruby (1.3.1)
     connection_pool (2.4.1)
     crass (1.0.6)
-    date (3.3.4)
+    date (3.4.1)
     diff-lcs (1.5.1)
     dogstatsd-ruby (5.6.1)
     dotenv (3.1.2)
@@ -131,7 +131,7 @@ GEM
     mini_mime (1.1.5)
     minitest (5.23.1)
     mutex_m (0.2.0)
-    net-imap (0.4.11)
+    net-imap (0.4.20)
       date
       net-protocol
     net-pop (0.1.2)
@@ -248,7 +248,7 @@ GEM
       rubocop-performance (~> 1.20.2)
     stringio (3.1.0)
     thor (1.3.1)
-    timeout (0.4.1)
+    timeout (0.4.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)