1 files changed, 1 insertions, 0 deletions
diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol
index 44de54817..fd655e757 100644
--- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinSignatureValidator.sol
@@ -17,6 +17,7 @@
 */
 
 pragma solidity 0.4.24;
+pragma experimental "v0.5.0";
 
 import "../../utils/LibBytes/LibBytes.sol";
 import "./mixins/MSignatureValidator.sol";