diff --git a/Gemfile.lock b/Gemfile.lock
index 5b7f6feee7..c49268aa14 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,7 +5,7 @@ GEM
     addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     afm (0.2.2)
-    async (2.9.0)
+    async (2.10.1)
       console (~> 1.10)
       fiber-annotation
       io-event (~> 1.5, >= 1.5.1)