diff --git a/e2e/tests/omnibus-sepolia.toml/test/Common.sol b/e2e/tests/omnibus-sepolia.toml/test/Common.sol
index 339db7d3..b6c77578 100644
--- a/e2e/tests/omnibus-sepolia.toml/test/Common.sol
+++ b/e2e/tests/omnibus-sepolia.toml/test/Common.sol
@@ -5,13 +5,13 @@ import {CannonDeploy} from "./CannonDeploy.sol";
 import {ICoreProxy} from "deployments/sol/ICoreProxy.sol";
 import {IAccountProxy} from "deployments/sol/IAccountProxy.sol";
 import { IV4PerpsMarketProxy } from "deployments/sol/IV4PerpsMarketProxy.sol";
-import { CollateralMock } from "@synthetixio/main/contracts/mocks/CollateralMock.sol";
+import {IUSDProxy} from "deployments/sol/IUSDProxy.sol";
 
 contract CommonTest is Test {
     ICoreProxy internal CoreProxy;
     IAccountProxy internal AccountProxy;
     IV4PerpsMarketProxy internal PerpsMarketProxy;
-    CollateralMock internal mockUSDC;
+    IUSDProxy internal mockUSDC;
     uint128 internal collateralId = 1;
     uint256 internal fork;
 
@@ -43,7 +43,7 @@ contract CommonTest is Test {
         CannonDeploy deployer = new CannonDeploy();
         deployer.run();
     
-        mockUSDC = CollateralMock(PerpsMarketProxy.collateralToken());
+        mockUSDC = IUSDProxy(PerpsMarketProxy.collateralToken());
         vm.label(address(mockUSDC), "CollateralMockUSDC");
     }
 }
diff --git a/package.json b/package.json
index cf639856..b1dac5f3 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,6 @@
   "devDependencies": {
     "@pythnetwork/pyth-evm-js": "^1.82.0",
     "@synthetixio/core-contracts": "^3.12.0",
-    "@synthetixio/main": "^3.12.3",
     "@usecannon/builder": "2.23.0",
     "@usecannon/cli": "2.23.0",
     "abi-to-sol": "^0.8.0",
diff --git a/yarn.lock b/yarn.lock
index ff763c93..4fbbc0ae 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1052,13 +1052,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@synthetixio/main@npm:^3.12.3":
-  version: 3.12.3
-  resolution: "@synthetixio/main@npm:3.12.3"
-  checksum: 10/a76f2cafec80981f348e1da284be8ae5abc4c44d26d2afcc854002aa662cd285fc8d42fab1a505c319c668552ac12661e84d794907c53c6b8e8516a03903f551
-  languageName: node
-  linkType: hard
-
 "@taplo/core@npm:^0.1.0":
   version: 0.1.1
   resolution: "@taplo/core@npm:0.1.1"
@@ -5103,7 +5096,6 @@ __metadata:
   dependencies:
     "@pythnetwork/pyth-evm-js": "npm:^1.82.0"
     "@synthetixio/core-contracts": "npm:^3.12.0"
-    "@synthetixio/main": "npm:^3.12.3"
     "@usecannon/builder": "npm:2.23.0"
     "@usecannon/cli": "npm:2.23.0"
     abi-to-sol: "npm:^0.8.0"