diff --git a/package.json b/package.json
index 64f80e3b8..4ef961afa 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "glob": "^7.1.6"
   },
   "devDependencies": {
-    "@eth-optimism/plugins": "^0.0.10",
+    "@eth-optimism/plugins": "^0.0.16",
     "@eth-optimism/smock": "0.2.1-alpha.0",
     "@nomiclabs/hardhat-ethers": "^2.0.1",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
diff --git a/test/contracts/OVM/bridge/OVM_L1MultiMessageRelayer.ts b/test/contracts/OVM/bridge/OVM_L1MultiMessageRelayer.ts
index 4e882b55e..886290e39 100644
--- a/test/contracts/OVM/bridge/OVM_L1MultiMessageRelayer.ts
+++ b/test/contracts/OVM/bridge/OVM_L1MultiMessageRelayer.ts
@@ -39,9 +39,9 @@ describe('OVM_L1MultiMessageRelayer', () => {
 
     // set the address of the mock contract to target
     await AddressManager.setAddress(
-      // 'Proxy__OVM_L1CrossDomainMessenger' is the string used by the contract under test to lookup 
+      // 'Proxy__OVM_L1CrossDomainMessenger' is the string used by the contract under test to lookup
       // the target contract. On mainnet the target is a proxy which points to the implementation of
-      // the L1CrossDomainMessenger. 
+      // the L1CrossDomainMessenger.
       // In order to keep the tests simple, we skip the proxy here, and point directly to the impl.
       'Proxy__OVM_L1CrossDomainMessenger',
       Mock__OVM_L1CrossDomainMessenger.address
@@ -102,7 +102,7 @@ describe('OVM_L1MultiMessageRelayer', () => {
     // check in its onlyRelayer modifier.
     // The string currently used in the AddressManager is 'OVM_L2MessageRelayer'
     await AddressManager.setAddress(
-      'OVM_L2MessageRelayer', 
+      'OVM_L2MessageRelayer',
       OVM_L1MultiMessageRelayer.address
     )
     // set the mock return value
diff --git a/yarn.lock b/yarn.lock
index 19eb89da5..d8120f4b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -39,10 +39,10 @@
   resolved "https://registry.yarnpkg.com/@ensdomains/resolver/-/resolver-0.2.4.tgz#c10fe28bf5efbf49bff4666d909aed0265efbc89"
   integrity sha512-bvaTH34PMCbv6anRa9I/0zjLJgY4EuznbEMgbV77JBCQ9KNC46rzi0avuxpOfu+xDjPEtSFGqVEOr5GlUSGudA==
 
-"@eth-optimism/contracts@^0.0.2-alpha.14":
-  version "0.0.2-alpha.15"
-  resolved "https://registry.yarnpkg.com/@eth-optimism/contracts/-/contracts-0.0.2-alpha.15.tgz#d602bdb6f1186d111ce9f7c282fc80e023086892"
-  integrity sha512-upJfYHDWQY7nM0AYT9MKQiuOus2uMUhvqS962qiBq3Ly/9GUq5mS0UALynsrZBGbzT6pflOMKFFEv7jQEORGmA==
+"@eth-optimism/contracts@0.0.2-alpha.14":
+  version "0.0.2-alpha.14"
+  resolved "https://registry.yarnpkg.com/@eth-optimism/contracts/-/contracts-0.0.2-alpha.14.tgz#382ae9250e7d89e7729bcfe73ffdb85897e385c2"
+  integrity sha512-EeOKiQ+Tu/bZqlq2bsXJegRYHhBXlcDO+fNXG1NJyies23rcLrjR7LMocJmw/F9TpYJ08UqvOHttD5w//cntpg==
   dependencies:
     "@eth-optimism/solc" "^0.6.12-alpha.1"
     "@ethersproject/contracts" "^5.0.5"
@@ -75,16 +75,13 @@
     util.promisify "^1.0.0"
     uuid "^8.3.0"
 
-"@eth-optimism/plugins@^0.0.10":
-  version "0.0.10"
-  resolved "https://registry.yarnpkg.com/@eth-optimism/plugins/-/plugins-0.0.10.tgz#c9cc24b484d64b4adfad8dc21d883b71ba563dde"
-  integrity sha512-OCJStdrTVLVlHHFLP+7WXyKt/dWyzxXzivIuf9V1xAGDavxCg8Y4CFzUq70pf3GpjBw230uFhn8vjq26cBppkA==
+"@eth-optimism/plugins@^0.0.16":
+  version "0.0.16"
+  resolved "https://registry.yarnpkg.com/@eth-optimism/plugins/-/plugins-0.0.16.tgz#eae8a3e3be4d92aac866e31acad96291d4ae5c76"
+  integrity sha512-vXYljJzQu+kSUydG6WIgGxfnP54nbutKmzbAcy8j2GJgLLhtZSxCIA+UhBiO1mA4k/qFeUGJcf8kZfaddKygIQ==
   dependencies:
-    "@eth-optimism/contracts" "^0.0.2-alpha.14"
+    "@eth-optimism/contracts" "0.0.2-alpha.14"
     "@eth-optimism/ethereumjs-vm" "^4.2.0-alpha.2"
-    "@eth-optimism/solc-v0.5.16" "npm:@eth-optimism/solc@^0.5.16-alpha.7"
-    "@eth-optimism/solc-v0.6.12" "npm:@eth-optimism/solc@^0.6.12-alpha.1"
-    "@eth-optimism/solc-v0.7.6" "npm:@eth-optimism/solc@^0.7.6-alpha.0"
     "@nomiclabs/hardhat-truffle5" "^2.0.0"
     bn.js "^5.1.3"
     ethereumjs-account "^3.0.0"
@@ -104,22 +101,7 @@
     fs-extra "^9.0.1"
     hardhat "^2.0.3"
 
-"@eth-optimism/solc-v0.5.16@npm:@eth-optimism/solc@^0.5.16-alpha.7":
-  version "0.5.16-alpha.7"
-  resolved "https://registry.yarnpkg.com/@eth-optimism/solc/-/solc-0.5.16-alpha.7.tgz#3767a34715dce6cb342ae66df834cc7ed6d9a6e3"
-  integrity sha512-Lzcd1379o4rN3vIdxyI0z2bbbG7SMEA+tOC78UwNak7uCbCUEaXN8Qo5+X5wSp01Ab6TjfrBku6jTUSTLlwZuA==
-  dependencies:
-    command-exists "^1.2.8"
-    commander "3.0.2"
-    follow-redirects "^1.12.1"
-    fs-extra "^0.30.0"
-    js-sha3 "0.8.0"
-    memorystream "^0.3.1"
-    require-from-string "^2.0.0"
-    semver "^5.5.0"
-    tmp "0.0.33"
-
-"@eth-optimism/solc-v0.6.12@npm:@eth-optimism/solc@^0.6.12-alpha.1", "@eth-optimism/solc@^0.6.12-alpha.1":
+"@eth-optimism/solc@^0.6.12-alpha.1":
   version "0.6.12-alpha.1"
   resolved "https://registry.yarnpkg.com/@eth-optimism/solc/-/solc-0.6.12-alpha.1.tgz#041876f83b34c6afe2f19dfe9626568df6ed8590"
   integrity sha512-Ky73mo+2iNJs/VTaT751nMeZ7hXns0TBAlffTOxIOsScjAZ/zi/KWsDUo3r89aV2JKXcYAU/bLidxF40MVJeUw==
@@ -134,21 +116,6 @@
     semver "^5.5.0"
     tmp "0.0.33"
 
-"@eth-optimism/solc-v0.7.6@npm:@eth-optimism/solc@^0.7.6-alpha.0":
-  version "0.7.6-alpha.1"
-  resolved "https://registry.yarnpkg.com/@eth-optimism/solc/-/solc-0.7.6-alpha.1.tgz#f503073161fdc0029dbc1dae6fae28eeb046b559"
-  integrity sha512-tVYeBtjwNRUDmaTdJNlKI0lTM0yV1hez0jPFOtACoepBwBEZOuuFLBgQLBOWPaR95UU2ke1YjqB7rrpkE3oRDg==
-  dependencies:
-    command-exists "^1.2.8"
-    commander "3.0.2"
-    follow-redirects "^1.12.1"
-    fs-extra "^0.30.0"
-    js-sha3 "0.8.0"
-    memorystream "^0.3.1"
-    require-from-string "^2.0.0"
-    semver "^5.5.0"
-    tmp "0.0.33"
-
 "@ethereum-waffle/chai@^3.0.0", "@ethereum-waffle/chai@^3.2.2":
   version "3.2.2"
   resolved "https://registry.yarnpkg.com/@ethereum-waffle/chai/-/chai-3.2.2.tgz#33a349688386c9a8fdc4da5baea329036b9fe75e"