diff --git a/Gemfile.lock b/Gemfile.lock
index 138e7f1..981540d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,7 +53,7 @@ GEM
     mutex_m (0.3.0)
     net-http (0.9.1)
       uri (>= 0.11.1)
-    net-imap (0.6.4)
+    net-imap (0.6.4.1)
       date
       net-protocol
     net-pop (0.1.2)