diff --git a/Gemfile.lock b/Gemfile.lock
index 4482e6a5fe4..4c033c6fd6d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -166,7 +166,7 @@ GEM
     mail (2.7.0)
       mini_mime (>= 0.1.1)
     memory_profiler (0.9.10)
-    message_bus (2.1.2)
+    message_bus (2.1.4)
       rack (>= 1.1.3)
     metaclass (0.0.4)
     method_source (0.8.2)