diff --git a/Gemfile.lock b/Gemfile.lock
index e7b7110c..6ac0cd95 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -130,7 +130,7 @@ GEM
       activerecord (>= 5.a)
       database_cleaner-core (~> 2.0.0)
     database_cleaner-core (2.0.1)
-    date (3.4.1)
+    date (3.5.1)
     devise (4.9.4)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -214,7 +214,7 @@ GEM
     mutex_m (0.3.0)
     net-http (0.6.0)
       uri
-    net-imap (0.5.8)
+    net-imap (0.5.14)
       date
       net-protocol
     net-pop (0.1.2)
@@ -441,7 +441,7 @@ GEM
       execjs (>= 0.3.0, < 3)
     thor (1.3.2)
     tilt (2.3.0)
-    timeout (0.4.3)
+    timeout (0.6.1)
     turbolinks (5.2.1)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)