diff --git a/code/counter/yarn.lock b/code/counter/yarn.lock
index e480c04..c506cd3 100644
--- a/code/counter/yarn.lock
+++ b/code/counter/yarn.lock
@@ -2,11 +2,6 @@
 # yarn lockfile v1
 
 
-"@openzeppelin/contracts@^3.1.0":
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-3.1.0.tgz#bcea457ef89069fbe5a617f50b25b6a8272895d5"
-  integrity sha512-dVXDnUKxrAKLzPdCRkz+N8qsVkK1XxJ6kk3zuI6zaQmcKxN7CkizoDP7lXxcs/Mi2I0mxceTRjJBqlzFffLJrQ==
-
 "@sindresorhus/is@^0.14.0":
   version "0.14.0"
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
@@ -1861,9 +1856,9 @@ qs@6.7.0:
   integrity sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==
 
 qs@~6.5.2:
-  version "6.5.2"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.2.tgz#cb3ae806e8740444584ef154ce8ee98d403f3e36"
-  integrity sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.3.tgz#3aeeffc91967ef6e35c0e488ef46fb296ab76aad"
+  integrity sha512-qxXIEh4pCGfHICj1mAJQ2/2XVZkjCDTcEgfoSQxc/fYivUZxTkk7L3bDBJSoNrEzXI17oUO5Dp07ktqE5KzczA==
 
 query-string@^5.0.1:
   version "5.1.1"