diff --git a/Gemfile.lock b/Gemfile.lock
index 481894c..938fb6f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -156,7 +156,7 @@ GEM
     csl-styles (1.0.1.11)
       csl (~> 1.0)
     dalli (3.2.8)
-    date (3.3.4)
+    date (3.5.1)
     debug_inspector (1.1.0)
     diff-lcs (1.4.4)
     docile (1.1.5)
@@ -245,7 +245,8 @@ GEM
     loofah (2.22.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    mail (2.8.1)
+    mail (2.9.1)
+      logger
       mini_mime (>= 0.1.1)
       net-imap
       net-pop
@@ -266,7 +267,7 @@ GEM
       oj (>= 2.8.3)
       oj_mimic_json (~> 1.0, >= 1.0.1)
     matrix (0.4.3)
-    mini_mime (1.0.3)
+    mini_mime (1.1.5)
     minitest (5.14.4)
     msgpack (1.4.5)
     multi_json (1.19.1)
@@ -275,14 +276,14 @@ GEM
       racc (~> 1.7)
     net-http (0.4.1)
       uri
-    net-imap (0.5.0)
+    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-smtp (0.5.0)
+    net-smtp (0.5.1)
       net-protocol
     next_rails (1.4.0)
       rainbow (>= 3)
@@ -444,7 +445,7 @@ GEM
     thor (1.3.2)
     time (0.4.2)
       date
-    timeout (0.4.1)
+    timeout (0.6.1)
     tsort (0.2.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)