diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 25ab6b388..28d924160 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -67,7 +67,7 @@ jobs:
         run: yarn test
 
   test-contracts:
-    name: Test storage layout and signatures
+    name: Test storage layout, signatures and look for unused errors
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -98,6 +98,12 @@ jobs:
       - name: Test function signatures
         run: yarn run test:signatures
 
+      - name: Run unused Solidity errors checker
+        uses: OffchainLabs/actions/check-unused-errors@main
+        with:
+          directory: './contracts'
+          exceptions_file: './test/unused-errors/exceptions.txt'
+
   test-e2e:
     name: Test e2e
     runs-on: ubuntu-latest
diff --git a/package.json b/package.json
index 42067a24e..2714ab098 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
     "test:storage": "./scripts/storage_layout_test.bash",
     "test:signatures": "./scripts/signatures_test.bash",
     "test:mutation": "ts-node test-mutation/gambitTester.ts",
+    "test:unused:errors": "./test/unused-errors/find_unused_errors.sh",
     "deploy:local:token-bridge": "ts-node ./scripts/local-deployment/deployCreatorAndCreateTokenBridge.ts",
     "deploy:token-bridge-creator": "ts-node ./scripts/deployment/deployTokenBridgeCreator.ts",
     "create:token-bridge": "ts-node ./scripts/deployment/createTokenBridge.ts",
diff --git a/test/unused-errors/exceptions.txt b/test/unused-errors/exceptions.txt
new file mode 100644
index 000000000..e69de29bb