diff --git a/yarn.lock b/yarn.lock
index 5598f62..37c714c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -308,10 +308,10 @@ async@1.x, async@^1.4.0:
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
 
 async@^2.3.0, async@^2.4.0, async@^2.5.0, async@^2.6.0, async@~2.6.0:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.6.0.tgz#61a29abb6fcc026fea77e56d1c6ec53a795951f4"
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
   dependencies:
-    lodash "^4.14.0"
+    lodash "^4.17.14"
 
 async@~0.2.7:
   version "0.2.10"
@@ -1867,9 +1867,9 @@ lodash.noop@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/lodash.noop/-/lodash.noop-3.0.1.tgz#38188f4d650a3a474258439b96ec45b32617133c"
 
-lodash@^4.14.0, lodash@^4.15.0, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.3.0:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+lodash@^4.15.0, lodash@^4.17.14, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.3.0:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 log-driver@^1.2.5:
   version "1.2.5"