diff --git a/contracts/zero-ex/contracts/test/foundry/LiveBridgeOrderTests.sol b/contracts/zero-ex/contracts/test/foundry/LiveBridgeOrderTests.sol
index 855c3bf8a8..333e38ba14 100644
--- a/contracts/zero-ex/contracts/test/foundry/LiveBridgeOrderTests.sol
+++ b/contracts/zero-ex/contracts/test/foundry/LiveBridgeOrderTests.sol
@@ -13,7 +13,6 @@ import "src/transformers/FillQuoteTransformer.sol";
 import "src/transformers/bridges/BridgeProtocols.sol";
 import "src/features/OtcOrdersFeature.sol";
 import "samplers/UniswapV2Sampler.sol";
-import "forge-std/StdJson.sol";
 
 contract ETHToERC20TransformTest is Test, ForkUtils, TestUtils {
     //use forge-std json library for strings
diff --git a/contracts/zero-ex/contracts/test/foundry/OtcOrderTests.sol b/contracts/zero-ex/contracts/test/foundry/OtcOrderTests.sol
index c727287ee0..2fc20d7273 100644
--- a/contracts/zero-ex/contracts/test/foundry/OtcOrderTests.sol
+++ b/contracts/zero-ex/contracts/test/foundry/OtcOrderTests.sol
@@ -13,7 +13,6 @@ import "src/transformers/FillQuoteTransformer.sol";
 import "src/transformers/bridges/BridgeProtocols.sol";
 import "src/features/OtcOrdersFeature.sol";
 import "samplers/UniswapV2Sampler.sol";
-import "forge-std/StdJson.sol";
 
 contract NativeTokenToERC20WithOtcTest is Test, ForkUtils, TestUtils {
     //use forge-std json library for strings
diff --git a/contracts/zero-ex/contracts/test/foundry/WethTransformerTests.sol b/contracts/zero-ex/contracts/test/foundry/WethTransformerTests.sol
index 46106dad4a..271346b4d3 100644
--- a/contracts/zero-ex/contracts/test/foundry/WethTransformerTests.sol
+++ b/contracts/zero-ex/contracts/test/foundry/WethTransformerTests.sol
@@ -19,7 +19,6 @@ import "src/transformers/bridges/AvalancheBridgeAdapter.sol";
 import "src/transformers/bridges/FantomBridgeAdapter.sol";
 import "src/transformers/bridges/CeloBridgeAdapter.sol";
 import "src/features/OtcOrdersFeature.sol";
-import "forge-std/StdJson.sol";
 
 contract transformERC20Tests is Test, ForkUtils, TestUtils {
     //use forge-std json library for strings