diff --git a/Gemfile.lock b/Gemfile.lock
index 8bb78f8d..d7260e46 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -237,7 +237,7 @@ GEM
       bigdecimal (~> 3.1)
     net-http (0.6.0)
       uri
-    net-imap (0.5.5)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)