diff --git a/CHANGELOG.md b/CHANGELOG.md
index 007f79389..7529a69a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 0.1.0 (2021-12-17)
+## 0.1.0 (2021-12-28)
 
 - refactor: add arbitrator data index getter ([47a1623](https://github.com/kleros/kleros-v2/commit/47a1623))
 - refactor: add evidence contracts ([09a34f3](https://github.com/kleros/kleros-v2/commit/09a34f3))
@@ -6,14 +6,17 @@
 - refactor: add simple evidence home contract ([1b82f62](https://github.com/kleros/kleros-v2/commit/1b82f62))
 - refactor: fix contract name ([6eb744a](https://github.com/kleros/kleros-v2/commit/6eb744a))
 - refactor: remove foreign evidence interface ([ff8c50c](https://github.com/kleros/kleros-v2/commit/ff8c50c))
+- refactor(bridge): use ArbRetryableTx#getSubmissionPrice ([61bc2f3](https://github.com/kleros/kleros-v2/commit/61bc2f3))
 - refactor(sdk): rename ([3241d10](https://github.com/kleros/kleros-v2/commit/3241d10))
-- test: add evidence contract tests ([590d800](https://github.com/kleros/kleros-v2/commit/590d800))
-- test: added a test for IncrementalNG ([65a996b](https://github.com/kleros/kleros-v2/commit/65a996b))
-- test(EvidenceModule): add test file ([9f00f98](https://github.com/kleros/kleros-v2/commit/9f00f98))
+- chore: .gitignore ([0ed4d74](https://github.com/kleros/kleros-v2/commit/0ed4d74))
+- chore: .gitignore and removal of unnecessary yarn cache as we are using "zero installs" ([a6cfdd0](https://github.com/kleros/kleros-v2/commit/a6cfdd0))
 - chore: added GitHub code scanning ([4a70475](https://github.com/kleros/kleros-v2/commit/4a70475))
 - chore: added the hardhat config for layer 2 networks, added hardhat-deploy and mocha ([a12ea0e](https://github.com/kleros/kleros-v2/commit/a12ea0e))
 - chore: gitignore typechain ([b50f777](https://github.com/kleros/kleros-v2/commit/b50f777))
 - chore(typechain): clean generated files ([775ddd0](https://github.com/kleros/kleros-v2/commit/775ddd0))
+- test: add evidence contract tests ([590d800](https://github.com/kleros/kleros-v2/commit/590d800))
+- test: added a test for IncrementalNG ([65a996b](https://github.com/kleros/kleros-v2/commit/65a996b))
+- test(EvidenceModule): add test file ([9f00f98](https://github.com/kleros/kleros-v2/commit/9f00f98))
 - fix: according to evidence standard + comments ([5c95828](https://github.com/kleros/kleros-v2/commit/5c95828))
 - fix: unused code ([26b5dc3](https://github.com/kleros/kleros-v2/commit/26b5dc3))
 - fix(Arbitrator): memory to calldata ([4770b1f](https://github.com/kleros/kleros-v2/commit/4770b1f))
@@ -22,6 +25,8 @@
 - fix(IArbitrator): change name to arbitration cost ([0ba4f29](https://github.com/kleros/kleros-v2/commit/0ba4f29))
 - fix(IArbitrator): interface simplification ([e81fb8b](https://github.com/kleros/kleros-v2/commit/e81fb8b))
 - fix(IArbitrator): replaced appealCost with fundingStatus ([f189dd9](https://github.com/kleros/kleros-v2/commit/f189dd9))
+- feat: add arbitrum L1 bridge and dependencies ([b412772](https://github.com/kleros/kleros-v2/commit/b412772))
+- feat: add arbitrum L2 bridge ([457b060](https://github.com/kleros/kleros-v2/commit/457b060))
 - feat: modern toolchain setup and simple RNG smart contracts ([17f6a76](https://github.com/kleros/kleros-v2/commit/17f6a76))
 - feat(Arbitration): standard update ([ed930de](https://github.com/kleros/kleros-v2/commit/ed930de))
 - docs: initial commit ([23356e7](https://github.com/kleros/kleros-v2/commit/23356e7))
diff --git a/contracts/package.json b/contracts/package.json
index dcf1cdc4f..db4f4108a 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -36,6 +36,7 @@
     "hardhat-deploy": "^0.9.6",
     "hardhat-deploy-ethers": "^0.3.0-beta.11",
     "hardhat-gas-reporter": "^1.0.4",
+    "json-schema": "^0.4.0",
     "mocha": "^9.1.3",
     "solhint": "^3.3.6",
     "solidity-coverage": "^0.7.17",
diff --git a/yarn.lock b/yarn.lock
index be9563aa4..0ee5ec37e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1011,6 +1011,7 @@ __metadata:
     hardhat-deploy: ^0.9.6
     hardhat-deploy-ethers: ^0.3.0-beta.11
     hardhat-gas-reporter: ^1.0.4
+    json-schema: ^0.4.0
     mocha: ^9.1.3
     solhint: ^3.3.6
     solidity-coverage: ^0.7.17
@@ -8923,6 +8924,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"json-schema@npm:^0.4.0":
+  version: 0.4.0
+  resolution: "json-schema@npm:0.4.0"
+  checksum: 66389434c3469e698da0df2e7ac5a3281bcff75e797a5c127db7c5b56270e01ae13d9afa3c03344f76e32e81678337a8c912bdbb75101c62e487dc3778461d72
+  languageName: node
+  linkType: hard
+
 "json-stable-stringify-without-jsonify@npm:^1.0.1":
   version: 1.0.1
   resolution: "json-stable-stringify-without-jsonify@npm:1.0.1"