diff --git a/solidity/ecdsa/yarn.lock b/solidity/ecdsa/yarn.lock
index bbede3be4d..e41f85a8c0 100644
--- a/solidity/ecdsa/yarn.lock
+++ b/solidity/ecdsa/yarn.lock
@@ -1153,11 +1153,16 @@
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts-upgradeable/-/contracts-upgradeable-4.5.2.tgz#90d9e47bacfd8693bfad0ac8a394645575528d05"
   integrity sha512-xgWZYaPlrEOQo3cBj97Ufiuv79SPd8Brh4GcFYhPgb6WvAq4ppz8dWKL6h+jLAK01rUqMRp/TS9AdXgAeNvCLA==
 
-"@openzeppelin/contracts@4.7.3", "@openzeppelin/contracts@^4.1.0", "@openzeppelin/contracts@^4.3.2", "@openzeppelin/contracts@^4.6.0":
+"@openzeppelin/contracts@4.7.3":
   version "4.7.3"
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.7.3.tgz#939534757a81f8d69cc854c7692805684ff3111e"
   integrity sha512-dGRS0agJzu8ybo44pCIf3xBaPQN/65AIXNgK8+4gzKd5kbvlqyxryUYVLJv7fK98Seyd2hDZzVEHSWAh0Bt1Yw==
 
+"@openzeppelin/contracts@^4.1.0", "@openzeppelin/contracts@^4.3.2", "@openzeppelin/contracts@^4.6.0":
+  version "4.9.1"
+  resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.9.1.tgz#afa804d2c68398704b0175acc94d91a54f203645"
+  integrity sha512-aLDTLu/If1qYIFW5g4ZibuQaUsFGWQPBq1mZKp/txaebUnGHDmmiBhRLY1tDNedN0m+fJtKZ1zAODS9Yk+V6uA==
+
 "@openzeppelin/contracts@~4.5.0":
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/@openzeppelin/contracts/-/contracts-4.5.0.tgz#3fd75d57de172b3743cdfc1206883f56430409cc"