diff --git a/yarn.lock b/yarn.lock
index 195334b..47de5c7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -351,6 +351,11 @@
     "@ethersproject/properties" "^5.7.0"
     "@ethersproject/strings" "^5.7.0"
 
+"@fastify/busboy@^2.0.0":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@fastify/busboy/-/busboy-2.1.1.tgz#b9da6a878a371829a0502c9b6c1c143ef6663f4d"
+  integrity sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==
+
 "@jridgewell/resolve-uri@^3.0.3":
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz#2203b118c157721addfe69d47b70465463066d78"
@@ -644,14 +649,14 @@
   integrity sha512-Gg0IFkT/DW3vOpih4/kMjeZCLYqtfgECLeLXTs7ZDPzcK0cfoc5wKk4nq5n/izCUzdhidO/Utd6ptF9JrWwWVA==
 
 "@nomiclabs/hardhat-ethers@^2.0.0":
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-ethers/-/hardhat-ethers-2.2.1.tgz#8057b43566a0e41abeb8142064a3c0d3f23dca86"
-  integrity sha512-RHWYwnxryWR8hzRmU4Jm/q4gzvXpetUOJ4OPlwH2YARcDB+j79+yAYCwO0lN1SUOb4++oOTJEe6AWLEc42LIvg==
+  version "2.2.3"
+  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-ethers/-/hardhat-ethers-2.2.3.tgz#b41053e360c31a32c2640c9a45ee981a7e603fe0"
+  integrity sha512-YhzPdzb612X591FOe68q+qXVXGG2ANZRvDo0RRUtimev85rCrAlv/TLMEZw5c+kq9AbzocLTVX/h2jVIFPL9Xg==
 
 "@nomiclabs/hardhat-etherscan@^3.0.0":
-  version "3.1.4"
-  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-etherscan/-/hardhat-etherscan-3.1.4.tgz#970e57fabc6060489c93b3f646ca790db36ffee0"
-  integrity sha512-fw8JCfukf6MdIGoySRmSftlM2wBgoaSbWQZgiYfD/KTeaSFEWCdMpuPZcLSBXtwtnQyyWDs07Lo7fL8HSqtD2Q==
+  version "3.1.8"
+  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-etherscan/-/hardhat-etherscan-3.1.8.tgz#3c12ee90b3733e0775e05111146ef9418d4f5a38"
+  integrity sha512-v5F6IzQhrsjHh6kQz4uNrym49brK9K5bYCq2zQZ729RYRaifI9hHbtmK+KkIVevfhut7huQFEQ77JLRMAzWYjQ==
   dependencies:
     "@ethersproject/abi" "^5.1.2"
     "@ethersproject/address" "^5.0.2"
@@ -662,7 +667,7 @@
     lodash "^4.17.11"
     semver "^6.3.0"
     table "^6.8.0"
-    undici "^5.4.0"
+    undici "^5.14.0"
 
 "@openzeppelin/contracts@^4.8.0":
   version "4.8.0"
@@ -4778,6 +4783,13 @@ unbox-primitive@^1.0.2:
     has-symbols "^1.0.3"
     which-boxed-primitive "^1.0.2"
 
+undici@^5.14.0:
+  version "5.29.0"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-5.29.0.tgz#419595449ae3f2cdcba3580a2e8903399bd1f5a3"
+  integrity sha512-raqeBD6NQK4SkWhQzeYKd1KmIG6dllBOTt55Rmkt4HtI9mwdWtJljnrXjAFUBLTSN67HWrOIZ3EPF4kjUw80Bg==
+  dependencies:
+    "@fastify/busboy" "^2.0.0"
+
 undici@^5.4.0:
   version "5.14.0"
   resolved "https://registry.yarnpkg.com/undici/-/undici-5.14.0.tgz#1169d0cdee06a4ffdd30810f6228d57998884d00"