diff --git a/Gemfile.lock b/Gemfile.lock
index bdf24bd5ef..7842eb25de 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -193,7 +193,7 @@ GEM
       mini_mime (>= 0.1.1)
     maxminddb (0.1.21)
     memory_profiler (0.9.12)
-    message_bus (2.1.5)
+    message_bus (2.1.6)
       rack (>= 1.1.3)
     metaclass (0.0.4)
     method_source (0.8.2)