diff --git a/Gemfile.lock b/Gemfile.lock
index 6ed4044be9..b55933b4f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,7 +89,7 @@ GEM
       ruby2_keywords (~> 0.0.1)
     net-protocol (0.2.1)
       timeout
-    net-smtp (0.3.3)
+    net-smtp (0.4.0)
       net-protocol
     netrc (0.11.0)
     nio4r (2.5.8)
@@ -207,7 +207,7 @@ GEM
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     tilt (2.1.0)
-    timeout (0.3.2)
+    timeout (0.4.0)
     timers (4.3.5)
     tins (1.32.1)
       sync