diff --git a/hardhat.config.ts b/hardhat.config.ts
index 1f0563d5e..1c25d2d4d 100644
--- a/hardhat.config.ts
+++ b/hardhat.config.ts
@@ -23,6 +23,18 @@ export default {
     kovan: {
       url: `https://kovan.infura.io/v3/${process.env.INFURA_API_KEY}`,
     },
+    arbitrumRinkeby: {
+      url: `https://arbitrum-rinkeby.infura.io/v3/${process.env.INFURA_API_KEY}`
+    },
+    arbitrum: {
+      url: `https://arbitrum-mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`
+    },
+    optimismKovan: {
+      url: `https://optimism-kovan.infura.io/v3/${process.env.INFURA_API_KEY}`
+    },
+    optimism: {
+      url: `https://optimism-mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`
+    }
   },
   etherscan: {
     // Your API key for Etherscan
diff --git a/package.json b/package.json
index ee746dc85..dba16d637 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   "dependencies": {},
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
-    "@nomiclabs/hardhat-etherscan": "^2.1.1",
+    "@nomiclabs/hardhat-etherscan": "^2.1.8",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
     "@typechain/ethers-v5": "^4.0.0",
     "@types/chai": "^4.2.6",
diff --git a/yarn.lock b/yarn.lock
index c07ef55c8..d2e231bae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -206,20 +206,20 @@
     "@ethersproject/properties" "^5.0.3"
     "@ethersproject/strings" "^5.0.4"
 
-"@ethersproject/abi@^5.0.2":
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.1.1.tgz#79525f582338d98660ac709c65b44c3c081ed2fc"
-  integrity sha512-UNmhRL4ngm1nCWvhJWRd55PvP1JWojGD4BR63JxyiiWZQAszYzaHHeYdRcj+NY3S0kV6SmAS2dZWSBOZPnXbSw==
-  dependencies:
-    "@ethersproject/address" "^5.1.0"
-    "@ethersproject/bignumber" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/constants" "^5.1.0"
-    "@ethersproject/hash" "^5.1.0"
-    "@ethersproject/keccak256" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    "@ethersproject/strings" "^5.1.0"
+"@ethersproject/abi@^5.1.2":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.5.0.tgz#fb52820e22e50b854ff15ce1647cc508d6660613"
+  integrity sha512-loW7I4AohP5KycATvc0MgujU6JyCHPqHdeoo9z3Nr9xEiNioxa65ccdm1+fsoJhkuhdRtfcL8cfyGamz2AxZ5w==
+  dependencies:
+    "@ethersproject/address" "^5.5.0"
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/constants" "^5.5.0"
+    "@ethersproject/hash" "^5.5.0"
+    "@ethersproject/keccak256" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    "@ethersproject/strings" "^5.5.0"
 
 "@ethersproject/abstract-provider@5.0.7", "@ethersproject/abstract-provider@^5.0.4":
   version "5.0.7"
@@ -234,18 +234,18 @@
     "@ethersproject/transactions" "^5.0.5"
     "@ethersproject/web" "^5.0.6"
 
-"@ethersproject/abstract-provider@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.1.0.tgz#1f24c56cda5524ef4ed3cfc562a01d6b6f8eeb0b"
-  integrity sha512-8dJUnT8VNvPwWhYIau4dwp7qe1g+KgdRm4XTWvjkI9gAT2zZa90WF5ApdZ3vl1r6NDmnn6vUVvyphClRZRteTQ==
+"@ethersproject/abstract-provider@^5.5.0":
+  version "5.5.1"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.5.1.tgz#2f1f6e8a3ab7d378d8ad0b5718460f85649710c5"
+  integrity sha512-m+MA/ful6eKbxpr99xUYeRvLkfnlqzrF8SZ46d/xFB1A7ZVknYc/sXJG0RcufF52Qn2jeFj1hhcoQ7IXjNKUqg==
   dependencies:
-    "@ethersproject/bignumber" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/networks" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    "@ethersproject/transactions" "^5.1.0"
-    "@ethersproject/web" "^5.1.0"
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/networks" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    "@ethersproject/transactions" "^5.5.0"
+    "@ethersproject/web" "^5.5.0"
 
 "@ethersproject/abstract-signer@5.0.9", "@ethersproject/abstract-signer@^5.0.4", "@ethersproject/abstract-signer@^5.0.6":
   version "5.0.9"
@@ -258,16 +258,16 @@
     "@ethersproject/logger" "^5.0.5"
     "@ethersproject/properties" "^5.0.3"
 
-"@ethersproject/abstract-signer@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.1.0.tgz#744c7a2d0ebe3cc0bc38294d0f53d5ca3f4e49e3"
-  integrity sha512-qQDMkjGZSSJSKl6AnfTgmz9FSnzq3iEoEbHTYwjDlEAv+LNP7zd4ixCcVWlWyk+2siud856M5CRhAmPdupeN9w==
+"@ethersproject/abstract-signer@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abstract-signer/-/abstract-signer-5.5.0.tgz#590ff6693370c60ae376bf1c7ada59eb2a8dd08d"
+  integrity sha512-lj//7r250MXVLKI7sVarXAbZXbv9P50lgmJQGr2/is82EwEb8r7HrxsmMqAjTsztMYy7ohrIhGMIml+Gx4D3mA==
   dependencies:
-    "@ethersproject/abstract-provider" "^5.1.0"
-    "@ethersproject/bignumber" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
+    "@ethersproject/abstract-provider" "^5.5.0"
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
 
 "@ethersproject/address@5.0.8", "@ethersproject/address@>=5.0.0-beta.128", "@ethersproject/address@^5.0.4", "@ethersproject/address@^5.0.5":
   version "5.0.8"
@@ -280,7 +280,7 @@
     "@ethersproject/logger" "^5.0.5"
     "@ethersproject/rlp" "^5.0.3"
 
-"@ethersproject/address@^5.0.2", "@ethersproject/address@^5.1.0":
+"@ethersproject/address@^5.0.2":
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.1.0.tgz#3854fd7ebcb6af7597de66f847c3345dae735b58"
   integrity sha512-rfWQR12eHn2cpstCFS4RF7oGjfbkZb0oqep+BfrT+gWEGWG2IowJvIsacPOvzyS1jhNF4MQ4BS59B04Mbovteg==
@@ -291,6 +291,17 @@
     "@ethersproject/logger" "^5.1.0"
     "@ethersproject/rlp" "^5.1.0"
 
+"@ethersproject/address@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/address/-/address-5.5.0.tgz#bcc6f576a553f21f3dd7ba17248f81b473c9c78f"
+  integrity sha512-l4Nj0eWlTUh6ro5IbPTgbpT4wRbdH5l8CQf7icF7sb/SI3Nhd9Y9HzhonTSTi6CefI0necIw7LJqQPopPLZyWw==
+  dependencies:
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/keccak256" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/rlp" "^5.5.0"
+
 "@ethersproject/base64@5.0.6", "@ethersproject/base64@^5.0.3":
   version "5.0.6"
   resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.0.6.tgz#26311ebf29ea3d0b9c300ccf3e1fdc44b7481516"
@@ -298,12 +309,12 @@
   dependencies:
     "@ethersproject/bytes" "^5.0.4"
 
-"@ethersproject/base64@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.1.0.tgz#27240c174d0a4e13f6eae87416fd876caf7f42b6"
-  integrity sha512-npD1bLvK4Bcxz+m4EMkx+F8Rd7CnqS9DYnhNu0/GlQBXhWjvfoAZzk5HJ0f1qeyp8d+A86PTuzLOGOXf4/CN8g==
+"@ethersproject/base64@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/base64/-/base64-5.5.0.tgz#881e8544e47ed976930836986e5eb8fab259c090"
+  integrity sha512-tdayUKhU1ljrlHzEWbStXazDpsx4eg1dBXUSI6+mHlYklOXoXF6lZvw8tnD6oVaWfnMxAgRSKROg3cVKtCcppA==
   dependencies:
-    "@ethersproject/bytes" "^5.1.0"
+    "@ethersproject/bytes" "^5.5.0"
 
 "@ethersproject/basex@5.0.6", "@ethersproject/basex@^5.0.3":
   version "5.0.6"
@@ -331,6 +342,15 @@
     "@ethersproject/logger" "^5.1.0"
     bn.js "^4.4.0"
 
+"@ethersproject/bignumber@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.5.0.tgz#875b143f04a216f4f8b96245bde942d42d279527"
+  integrity sha512-6Xytlwvy6Rn3U3gKEc1vP7nR92frHkv6wtVr95LFR3jREXiCPzdWxKQ1cx4JGQBXxcguAwjA8murlYN2TSiEbg==
+  dependencies:
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    bn.js "^4.11.9"
+
 "@ethersproject/bytes@5.0.8", "@ethersproject/bytes@>=5.0.0-beta.129", "@ethersproject/bytes@^5.0.4", "@ethersproject/bytes@^5.0.8":
   version "5.0.8"
   resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.0.8.tgz#cf1246a6a386086e590063a4602b1ffb6cc43db1"
@@ -345,6 +365,13 @@
   dependencies:
     "@ethersproject/logger" "^5.1.0"
 
+"@ethersproject/bytes@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bytes/-/bytes-5.5.0.tgz#cb11c526de657e7b45d2e0f0246fb3b9d29a601c"
+  integrity sha512-ABvc7BHWhZU9PNM/tANm/Qx4ostPGadAuQzWTr3doklZOhDlmcBqclrQe/ZXUIj3K8wC28oYeuRa+A37tX9kog==
+  dependencies:
+    "@ethersproject/logger" "^5.5.0"
+
 "@ethersproject/constants@5.0.7", "@ethersproject/constants@>=5.0.0-beta.128", "@ethersproject/constants@^5.0.4":
   version "5.0.7"
   resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.0.7.tgz#44ff979e5781b17c8c6901266896c3ee745f4e7e"
@@ -352,12 +379,12 @@
   dependencies:
     "@ethersproject/bignumber" "^5.0.7"
 
-"@ethersproject/constants@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.1.0.tgz#4e7da6367ea0e9be87585d8b09f3fccf384b1452"
-  integrity sha512-0/SuHrxc8R8k+JiLmJymxHJbojUDWBQqO+b+XFdwaP0jGzqC09YDy/CAlSZB6qHsBifY8X3I89HcK/oMqxRdBw==
+"@ethersproject/constants@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/constants/-/constants-5.5.0.tgz#d2a2cd7d94bd1d58377d1d66c4f53c9be4d0a45e"
+  integrity sha512-2MsRRVChkvMWR+GyMGY4N1sAX9Mt3J9KykCsgUFd/1mwS0UH1qw+Bv9k1UJb3X3YJYFco9H20pjSlOIfCG5HYQ==
   dependencies:
-    "@ethersproject/bignumber" "^5.1.0"
+    "@ethersproject/bignumber" "^5.5.0"
 
 "@ethersproject/contracts@5.0.8":
   version "5.0.8"
@@ -388,19 +415,19 @@
     "@ethersproject/properties" "^5.0.4"
     "@ethersproject/strings" "^5.0.4"
 
-"@ethersproject/hash@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.1.0.tgz#40961d64837d57f580b7b055e0d74174876d891e"
-  integrity sha512-fNwry20yLLPpnRRwm3fBL+2ksgO+KMadxM44WJmRIoTKzy4269+rbq9KFoe2LTqq2CXJM2CE70beGaNrpuqflQ==
-  dependencies:
-    "@ethersproject/abstract-signer" "^5.1.0"
-    "@ethersproject/address" "^5.1.0"
-    "@ethersproject/bignumber" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/keccak256" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    "@ethersproject/strings" "^5.1.0"
+"@ethersproject/hash@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/hash/-/hash-5.5.0.tgz#7cee76d08f88d1873574c849e0207dcb32380cc9"
+  integrity sha512-dnGVpK1WtBjmnp3mUT0PlU2MpapnwWI0PibldQEq1408tQBAbZpPidkWoVVuNMOl/lISO3+4hXZWCL3YV7qzfg==
+  dependencies:
+    "@ethersproject/abstract-signer" "^5.5.0"
+    "@ethersproject/address" "^5.5.0"
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/keccak256" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    "@ethersproject/strings" "^5.5.0"
 
 "@ethersproject/hdnode@5.0.7", "@ethersproject/hdnode@^5.0.4":
   version "5.0.7"
@@ -455,6 +482,14 @@
     "@ethersproject/bytes" "^5.1.0"
     js-sha3 "0.5.7"
 
+"@ethersproject/keccak256@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/keccak256/-/keccak256-5.5.0.tgz#e4b1f9d7701da87c564ffe336f86dcee82983492"
+  integrity sha512-5VoFCTjo2rYbBe1l2f4mccaRFN/4VQEYFwwn04aJV2h7qf4ZvI2wFxUE1XOX+snbwCLRzIeikOqtAoPwMza9kg==
+  dependencies:
+    "@ethersproject/bytes" "^5.5.0"
+    js-sha3 "0.8.0"
+
 "@ethersproject/logger@5.0.8", "@ethersproject/logger@>=5.0.0-beta.129", "@ethersproject/logger@^5.0.5":
   version "5.0.8"
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.0.8.tgz#135c1903d35c878265f3cbf2b287042c4c20d5d4"
@@ -465,6 +500,11 @@
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.1.0.tgz#4cdeeefac029373349d5818f39c31b82cc6d9bbf"
   integrity sha512-wtUaD1lBX10HBXjjKV9VHCBnTdUaKQnQ2XSET1ezglqLdPdllNOIlLfhyCRqXm5xwcjExVI5ETokOYfjPtaAlw==
 
+"@ethersproject/logger@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.5.0.tgz#0c2caebeff98e10aefa5aef27d7441c7fd18cf5d"
+  integrity sha512-rIY/6WPm7T8n3qS2vuHTUBPdXHl+rGxWxW5okDfo9J4Z0+gRRZT0msvUdIJkE4/HS29GUMziwGaaKO2bWONBrg==
+
 "@ethersproject/networks@5.0.6", "@ethersproject/networks@^5.0.3":
   version "5.0.6"
   resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.0.6.tgz#4d6586bbebfde1c027504ebf6dfb783b29c3803a"
@@ -472,12 +512,12 @@
   dependencies:
     "@ethersproject/logger" "^5.0.5"
 
-"@ethersproject/networks@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.1.0.tgz#f537290cb05aa6dc5e81e910926c04cfd5814bca"
-  integrity sha512-A/NIrIED/G/IgU1XUukOA3WcFRxn2I4O5GxsYGA5nFlIi+UZWdGojs85I1VXkR1gX9eFnDXzjE6OtbgZHjFhIA==
+"@ethersproject/networks@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.5.0.tgz#babec47cab892c51f8dd652ce7f2e3e14283981a"
+  integrity sha512-KWfP3xOnJeF89Uf/FCJdV1a2aDJe5XTN2N52p4fcQ34QhDqQFkgQKZ39VGtiqUgHcLI8DfT0l9azC3KFTunqtA==
   dependencies:
-    "@ethersproject/logger" "^5.1.0"
+    "@ethersproject/logger" "^5.5.0"
 
 "@ethersproject/pbkdf2@5.0.6", "@ethersproject/pbkdf2@^5.0.3":
   version "5.0.6"
@@ -494,12 +534,12 @@
   dependencies:
     "@ethersproject/logger" "^5.0.5"
 
-"@ethersproject/properties@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.1.0.tgz#9484bd6def16595fc6e4bdc26f29dff4d3f6ac42"
-  integrity sha512-519KKTwgmH42AQL3+GFV3SX6khYEfHsvI6v8HYejlkigSDuqttdgVygFTDsGlofNFchhDwuclrxQnD5B0YLNMg==
+"@ethersproject/properties@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/properties/-/properties-5.5.0.tgz#61f00f2bb83376d2071baab02245f92070c59995"
+  integrity sha512-l3zRQg3JkD8EL3CPjNK5g7kMx4qSwiR60/uk5IVjd3oq1MZR5qUg40CNOoEJoX5wc3DyY5bt9EbMk86C7x0DNA==
   dependencies:
-    "@ethersproject/logger" "^5.1.0"
+    "@ethersproject/logger" "^5.5.0"
 
 "@ethersproject/providers@5.0.17":
   version "5.0.17"
@@ -550,6 +590,14 @@
     "@ethersproject/bytes" "^5.1.0"
     "@ethersproject/logger" "^5.1.0"
 
+"@ethersproject/rlp@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/rlp/-/rlp-5.5.0.tgz#530f4f608f9ca9d4f89c24ab95db58ab56ab99a0"
+  integrity sha512-hLv8XaQ8PTI9g2RHoQGf/WSxBfTB/NudRacbzdxmst5VHAqd1sMibWG7SENzT5Dj3yZ3kJYx+WiRYEcQTAkcYA==
+  dependencies:
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+
 "@ethersproject/sha2@5.0.6", "@ethersproject/sha2@^5.0.3":
   version "5.0.6"
   resolved "https://registry.yarnpkg.com/@ethersproject/sha2/-/sha2-5.0.6.tgz#175116dc10b866a0a381f6316d094bcc510bee3c"
@@ -569,16 +617,17 @@
     "@ethersproject/properties" "^5.0.3"
     elliptic "6.5.3"
 
-"@ethersproject/signing-key@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/signing-key/-/signing-key-5.1.0.tgz#6eddfbddb6826b597b9650e01acf817bf8991b9c"
-  integrity sha512-tE5LFlbmdObG8bY04NpuwPWSRPgEswfxweAI1sH7TbP0ml1elNfqcq7ii/3AvIN05i5U0Pkm3Tf8bramt8MmLw==
+"@ethersproject/signing-key@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/signing-key/-/signing-key-5.5.0.tgz#2aa37169ce7e01e3e80f2c14325f624c29cedbe0"
+  integrity sha512-5VmseH7qjtNmDdZBswavhotYbWB0bOwKIlOTSlX14rKn5c11QmJwGt4GHeo7NrL/Ycl7uo9AHvEqs5xZgFBTng==
   dependencies:
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    bn.js "^4.4.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    bn.js "^4.11.9"
     elliptic "6.5.4"
+    hash.js "1.1.7"
 
 "@ethersproject/solidity@5.0.7":
   version "5.0.7"
@@ -600,14 +649,14 @@
     "@ethersproject/constants" "^5.0.4"
     "@ethersproject/logger" "^5.0.5"
 
-"@ethersproject/strings@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.1.0.tgz#0f95a56c3c8c9d5510a06c241d818779750e2da5"
-  integrity sha512-perBZy0RrmmL0ejiFGUOlBVjMsUceqLut3OBP3zP96LhiJWWbS8u1NqQVgN4/Gyrbziuda66DxiQocXhsvx+Sw==
+"@ethersproject/strings@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/strings/-/strings-5.5.0.tgz#e6784d00ec6c57710755699003bc747e98c5d549"
+  integrity sha512-9fy3TtF5LrX/wTrBaT8FGE6TDJyVjOvXynXJz5MT5azq+E6D92zuKNx7i29sWW2FjVOaWjAsiZ1ZWznuduTIIQ==
   dependencies:
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/constants" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/constants" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
 
 "@ethersproject/transactions@5.0.8", "@ethersproject/transactions@^5.0.0-beta.135", "@ethersproject/transactions@^5.0.5":
   version "5.0.8"
@@ -624,20 +673,20 @@
     "@ethersproject/rlp" "^5.0.3"
     "@ethersproject/signing-key" "^5.0.4"
 
-"@ethersproject/transactions@^5.1.0":
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.1.1.tgz#5a6bbb25fb062c3cc75eb0db12faefcdd3870813"
-  integrity sha512-Nwgbp09ttIVN0OoUBatCXaHxR7grWPHbozJN8v7AXDLrl6nnOIBEMDh+yJTnosSQlFhcyjfTGGN+Mx6R8HdvMw==
-  dependencies:
-    "@ethersproject/address" "^5.1.0"
-    "@ethersproject/bignumber" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/constants" "^5.1.0"
-    "@ethersproject/keccak256" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    "@ethersproject/rlp" "^5.1.0"
-    "@ethersproject/signing-key" "^5.1.0"
+"@ethersproject/transactions@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/transactions/-/transactions-5.5.0.tgz#7e9bf72e97bcdf69db34fe0d59e2f4203c7a2908"
+  integrity sha512-9RZYSKX26KfzEd/1eqvv8pLauCKzDTub0Ko4LfIgaERvRuwyaNV78mJs7cpIgZaDl6RJui4o49lHwwCM0526zA==
+  dependencies:
+    "@ethersproject/address" "^5.5.0"
+    "@ethersproject/bignumber" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/constants" "^5.5.0"
+    "@ethersproject/keccak256" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    "@ethersproject/rlp" "^5.5.0"
+    "@ethersproject/signing-key" "^5.5.0"
 
 "@ethersproject/units@5.0.8":
   version "5.0.8"
@@ -680,16 +729,16 @@
     "@ethersproject/properties" "^5.0.3"
     "@ethersproject/strings" "^5.0.4"
 
-"@ethersproject/web@^5.1.0":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@ethersproject/web/-/web-5.1.0.tgz#ed56bbe4e3d9a8ffe3b2ed882da5c62d3551381b"
-  integrity sha512-LTeluWgTq04+RNqAkVhpydPcRZK/kKxD2Vy7PYGrAD27ABO9kTqTBKwiOuzTyAHKUQHfnvZbXmxBXJAGViSDcA==
+"@ethersproject/web@^5.5.0":
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/@ethersproject/web/-/web-5.5.0.tgz#0e5bb21a2b58fb4960a705bfc6522a6acf461e28"
+  integrity sha512-BEgY0eL5oH4mAo37TNYVrFeHsIXLRxggCRG/ksRIxI2X5uj5IsjGmcNiRN/VirQOlBxcUhCgHhaDLG4m6XAVoA==
   dependencies:
-    "@ethersproject/base64" "^5.1.0"
-    "@ethersproject/bytes" "^5.1.0"
-    "@ethersproject/logger" "^5.1.0"
-    "@ethersproject/properties" "^5.1.0"
-    "@ethersproject/strings" "^5.1.0"
+    "@ethersproject/base64" "^5.5.0"
+    "@ethersproject/bytes" "^5.5.0"
+    "@ethersproject/logger" "^5.5.0"
+    "@ethersproject/properties" "^5.5.0"
+    "@ethersproject/strings" "^5.5.0"
 
 "@ethersproject/wordlists@5.0.7", "@ethersproject/wordlists@^5.0.4":
   version "5.0.7"
@@ -740,12 +789,12 @@
   resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-ethers/-/hardhat-ethers-2.0.2.tgz#c472abcba0c5185aaa4ad4070146e95213c68511"
   integrity sha512-6quxWe8wwS4X5v3Au8q1jOvXYEPkS1Fh+cME5u6AwNdnI4uERvPlVjlgRWzpnb+Rrt1l/cEqiNRH9GlsBMSDQg==
 
-"@nomiclabs/hardhat-etherscan@^2.1.1":
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-etherscan/-/hardhat-etherscan-2.1.1.tgz#186f3fa652a0ca20fb77aa857cfad2da845d5cbf"
-  integrity sha512-8TNUFsO5DpAfwNlXMDhcEtFAMOYsVNaQL2vq5vuCD45kUKBgL8H21++zOk231ha9D7LQWBMCIg7A7iPxw6Jwmg==
+"@nomiclabs/hardhat-etherscan@^2.1.8":
+  version "2.1.8"
+  resolved "https://registry.yarnpkg.com/@nomiclabs/hardhat-etherscan/-/hardhat-etherscan-2.1.8.tgz#e206275e96962cd15e5ba9148b44388bc922d8c2"
+  integrity sha512-0+rj0SsZotVOcTLyDOxnOc3Gulo8upo0rsw/h+gBPcmtj91YqYJNhdARHoBxOhhE8z+5IUQPx+Dii04lXT14PA==
   dependencies:
-    "@ethersproject/abi" "^5.0.2"
+    "@ethersproject/abi" "^5.1.2"
     "@ethersproject/address" "^5.0.2"
     cbor "^5.0.2"
     debug "^4.1.1"
@@ -4630,7 +4679,7 @@ hash.js@1.1.3:
     inherits "^2.0.3"
     minimalistic-assert "^1.0.0"
 
-hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.7:
+hash.js@1.1.7, hash.js@^1.0.0, hash.js@^1.0.3, hash.js@^1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
   integrity sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==