diff --git a/Gemfile.lock b/Gemfile.lock
index 307b12ba86..eb6581fdb3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,7 +34,7 @@ GEM
       public_suffix (>= 2.0.2, < 7.0)
     afm (0.2.2)
     ansi (1.5.0)
-    async (2.12.1)
+    async (2.13.0)
       console (~> 1.25, >= 1.25.2)
       fiber-annotation
       io-event (~> 1.6, >= 1.6.5)