diff --git a/yarn.lock b/yarn.lock
index c7f591d60..655125374 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1321,9 +1321,9 @@ astring@^1.4.3:
   integrity sha512-yJlJU/bmN820vL+cbWShu2YQU87dBP5V7BH2N4wODapRv27A2dZtUD0LgjP9lZENvPe9XRoSyWx+pZR6qKqNBw==
 
 async@^2.6.2:
-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.6.3.tgz#d72625e2344a3656e3a3ad4fa749fa83299d82ff"
-  integrity sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
   dependencies:
     lodash "^4.17.14"