diff --git a/examples/simplest/yarn.lock b/examples/simplest/yarn.lock
index b7c2211..70e23a9 100644
--- a/examples/simplest/yarn.lock
+++ b/examples/simplest/yarn.lock
@@ -160,10 +160,10 @@ assert-plus@^0.2.0:
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.2.0.tgz#d74e1b87e7affc0db8aadb7021f3fe48101ab234"
 
 async@^2.4.0:
-  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"
 
 asynckit@^0.4.0:
   version "0.4.0"
@@ -2245,9 +2245,9 @@ lodash@^3.5.0:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.16.6, lodash@^4.17.4, lodash@^4.3.0, lodash@^4.6.1:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
+lodash@^4.0.0, lodash@^4.16.6, lodash@^4.17.14, lodash@^4.17.4, lodash@^4.3.0, lodash@^4.6.1:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
   version "1.3.1"
@@ -2899,7 +2899,7 @@ react-native-maps@0.17.1:
   version "0.17.1"
   resolved "https://registry.yarnpkg.com/react-native-maps/-/react-native-maps-0.17.1.tgz#ab2236341fd984dac8864202ae55331bc262f60c"
 
-react-native-picker-dropdown@^0.1.1:
+react-native-picker-dropdown@0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/react-native-picker-dropdown/-/react-native-picker-dropdown-0.1.1.tgz#f1154c65e9280ef9bded11b5fc9caaff32a14f82"