diff --git a/old/02-serverless-api-ecs-apigateway/client-application-react/yarn.lock b/old/02-serverless-api-ecs-apigateway/client-application-react/yarn.lock
index 243a16c..d41bf12 100644
--- a/old/02-serverless-api-ecs-apigateway/client-application-react/yarn.lock
+++ b/old/02-serverless-api-ecs-apigateway/client-application-react/yarn.lock
@@ -9230,9 +9230,9 @@ js-cookie@^2.2.1:
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
 js-yaml@^3.13.1:
-  version "3.14.1"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
-  integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
+  version "3.15.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.15.0.tgz#586e5214eafe3e893756a41e979b50d89d3e4a67"
+  integrity sha512-ttBQIIQPDeLjpPOohtUdXuXUVoA2uIB6fEH9HyJ7234s5mBJ5wTx20njxplLZQgLaOfpmPQA7X2t5AX6tIPbog==
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"