diff --git a/Gemfile.lock b/Gemfile.lock
index fda052e6..0139e02b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -163,7 +163,7 @@ GEM
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.5)
-    net-imap (0.3.6)
+    net-imap (0.3.7)
       date
       net-protocol
     net-pop (0.1.2)