diff --git a/Gemfile.lock b/Gemfile.lock
index dab8c66c..b9955178 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -61,7 +61,7 @@ GEM
     matrix (0.4.3)
     mini_mime (1.1.5)
     mustermann (3.1.1)
-    net-imap (0.6.4)
+    net-imap (0.6.4.1)
       date
       net-protocol
     net-pop (0.1.2)