diff --git a/Gemfile.lock b/Gemfile.lock
index 3495e9eea..2adba2198 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -297,7 +297,7 @@ GEM
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.11)
-    mail (2.6.4)
+    mail (2.6.5)
       mime-types (>= 1.16, < 4)
     method_source (0.8.2)
     mime-types (3.1)