diff --git a/Gemfile.lock b/Gemfile.lock
index f0f4d9e..d8964a5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -241,7 +241,7 @@ GEM
     loofah (2.25.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    mail (2.9.0)
+    mail (2.9.1)
       logger
       mini_mime (>= 0.1.1)
       net-imap
@@ -255,12 +255,12 @@ GEM
       drb (~> 2.0)
       prism (~> 1.5)
     mutex_m (0.3.0)
-    net-imap (0.6.4.1)
+    net-imap (0.6.6)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.2)
+    net-protocol (0.3.0)
       timeout
     net-scp (4.1.0)
       net-ssh (>= 2.6.5, < 8.0.0)