diff --git a/blockchain/ethereum/perpetual-auction/dapp/yarn.lock b/blockchain/ethereum/perpetual-auction/dapp/yarn.lock
index 9644e27..5f248ec 100644
--- a/blockchain/ethereum/perpetual-auction/dapp/yarn.lock
+++ b/blockchain/ethereum/perpetual-auction/dapp/yarn.lock
@@ -4944,9 +4944,9 @@ q@^1.1.2:
   integrity sha1-fjL3W0E4EpHQRhHxvxQQmsAGUdc=
 
 qs@~6.5.2:
-  version "6.5.2"
-  resolved "https://registry.nlark.com/qs/download/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
-  integrity sha1-yzroBuh0BERYTvFUzo7pjUA/PjY=
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.3.tgz#3aeeffc91967ef6e35c0e488ef46fb296ab76aad"
+  integrity sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA==
 
 querystring-es3@^0.2.0:
   version "0.2.1"