diff --git a/RNTester/yarn.lock b/RNTester/yarn.lock
index a651b348d..3392e60f0 100644
--- a/RNTester/yarn.lock
+++ b/RNTester/yarn.lock
@@ -2884,7 +2884,7 @@ react-devtools-core@3.0.0:
     shell-quote "^1.6.1"
     ws "^2.0.3"
 
-react-native@0.53.3:
+react-native@^0.53.3:
   version "0.53.3"
   resolved "https://registry.yarnpkg.com/react-native/-/react-native-0.53.3.tgz#930d1de5d68866f32a4b55112fc0228e29784e8f"
   dependencies:
@@ -3584,8 +3584,8 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
 ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
+  version "0.7.28"
+  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.28.tgz#8ba04e653f35ce210239c64661685bf9121dec31"
 
 uglify-es@^3.1.9:
   version "3.3.9"