diff --git a/yarn.lock b/yarn.lock
index 6ba22b4..576c399 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -76,10 +76,8 @@ assertion-error@^1.0.1:
   resolved "https://registry.yarnpkg.com/assertion-error/-/assertion-error-1.0.2.tgz#13ca515d86206da0bac66e834dd397d87581094c"
 
 async@latest:
-  version "2.5.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.5.0.tgz#843190fd6b7357a0b9e1c956edddd5ec8462b54d"
-  dependencies:
-    lodash "^4.14.0"
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.3.tgz#ac53dafd3f4720ee9e8a160628f18ea91df196c9"
 
 babel-code-frame@^6.22.0:
   version "6.26.0"
@@ -600,10 +598,6 @@ has@^1.0.1:
   dependencies:
     function-bind "^1.0.2"
 
-heapdump@latest:
-  version "0.3.9"
-  resolved "https://registry.yarnpkg.com/heapdump/-/heapdump-0.3.9.tgz#03c74eb0df5d67be0982e83429ba9c9d2b3b7f78"
-
 hosted-git-info@^2.1.4:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.5.0.tgz#6d60e34b3abbc8313062c3b798ef8d901a07af3c"
@@ -786,7 +780,7 @@ lodash.cond@^4.3.0:
   version "4.5.2"
   resolved "https://registry.yarnpkg.com/lodash.cond/-/lodash.cond-4.5.2.tgz#f471a1da486be60f6ab955d17115523dd1d255d5"
 
-lodash@^4.14.0, lodash@^4.17.4, lodash@^4.3.0:
+lodash@^4.17.4, lodash@^4.3.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"