diff --git a/Gemfile.lock b/Gemfile.lock
index d69b169e..322e5385 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -255,7 +255,7 @@ GEM
       bigdecimal (~> 3.1)
     net-http (0.4.1)
       uri
-    net-imap (0.4.12)
+    net-imap (0.4.17)
       date
       net-protocol
     net-pop (0.1.2)