diff --git a/Gemfile.lock b/Gemfile.lock
index 95cb5f508..461c48d39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -218,7 +218,7 @@ GEM
     msgpack (1.8.1)
     multi_xml (0.9.1)
       bigdecimal (>= 3.1, < 5)
-    net-imap (0.6.4)
+    net-imap (0.6.4.1)
       date
       net-protocol
     net-pop (0.1.2)