Updated any remaining contracts using 0.5.5 to 0.5.9

contracts/asset-proxy/contracts/src/ERC20Proxy.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./MixinAuthorizable.sol";
 

contracts/asset-proxy/contracts/src/ERC721Proxy.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./MixinAuthorizable.sol";
 

contracts/asset-proxy/contracts/src/MixinAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
 import "./mixins/MAssetProxyDispatcher.sol";

contracts/asset-proxy/contracts/src/MixinAuthorizable.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
 import "./mixins/MAuthorizable.sol";

contracts/asset-proxy/contracts/src/MultiAssetProxy.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./MixinAssetProxyDispatcher.sol";
 import "./MixinAuthorizable.sol";

contracts/asset-proxy/contracts/src/interfaces/IAssetData.sol

@@ -17,7 +17,7 @@
 */
 
 // solhint-disable
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 

contracts/asset-proxy/contracts/src/interfaces/IAssetProxy.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./IAuthorizable.sol";
 

contracts/asset-proxy/contracts/src/interfaces/IAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IAssetProxyDispatcher {

contracts/asset-proxy/contracts/src/interfaces/IAuthorizable.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/interfaces/IOwnable.sol";
 

contracts/asset-proxy/contracts/src/mixins/MAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "../interfaces/IAssetProxyDispatcher.sol";
 

contracts/asset-proxy/contracts/src/mixins/MAuthorizable.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "../interfaces/IAuthorizable.sol";
 

contracts/coordinator/contracts/src/Coordinator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibEIP712ExchangeDomain.sol";

contracts/coordinator/contracts/src/MixinCoordinatorApprovalVerifier.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibExchangeSelectors.sol";

contracts/coordinator/contracts/src/MixinCoordinatorCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibZeroExTransaction.sol";

contracts/coordinator/contracts/src/MixinSignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "./mixins/MSignatureValidator.sol";

contracts/coordinator/contracts/src/interfaces/ICoordinatorApprovalVerifier.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/coordinator/contracts/src/interfaces/ICoordinatorCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibZeroExTransaction.sol";

contracts/coordinator/contracts/src/interfaces/ISignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract ISignatureValidator {

contracts/coordinator/contracts/src/libs/LibConstants.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/ITransactions.sol";
 

contracts/coordinator/contracts/src/libs/LibCoordinatorApproval.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./LibEIP712CoordinatorDomain.sol";

contracts/coordinator/contracts/src/libs/LibEIP712CoordinatorDomain.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibEIP712.sol";
 

contracts/coordinator/contracts/src/mixins/MCoordinatorApprovalVerifier.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/coordinator/contracts/src/mixins/MSignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "../interfaces/ISignatureValidator.sol";
 

contracts/coordinator/contracts/src/registry/CoordinatorRegistry.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./MixinCoordinatorRegistryCore.sol";
 

contracts/coordinator/contracts/src/registry/MixinCoordinatorRegistryCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./interfaces/ICoordinatorRegistryCore.sol";
 

contracts/coordinator/contracts/src/registry/interfaces/ICoordinatorRegistryCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 // solhint-disable no-empty-blocks

contracts/erc1155/contracts/src/ERC1155.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 import "@0x/contracts-utils/contracts/src/LibAddress.sol";

contracts/erc1155/contracts/src/ERC1155Mintable.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 import "./ERC1155.sol";

contracts/erc1155/contracts/src/MixinNonFungibleToken.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./mixins/MNonFungibleToken.sol";
 

contracts/erc1155/contracts/src/interfaces/IERC1155.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 /// @title ERC-1155 Multi Token Standard

contracts/erc1155/contracts/src/interfaces/IERC1155Mintable.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./IERC1155.sol";
 

contracts/erc1155/contracts/src/interfaces/IERC1155Receiver.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 interface IERC1155Receiver {

contracts/erc1155/contracts/src/mixins/MNonFungibleToken.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract MNonFungibleToken {

contracts/erc20/contracts/src/ERC20Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./interfaces/IERC20Token.sol";
 

contracts/erc20/contracts/src/MintableERC20Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 import "./UnlimitedAllowanceERC20Token.sol";

contracts/erc20/contracts/src/UnlimitedAllowanceERC20Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./ERC20Token.sol";
 

contracts/erc20/contracts/src/interfaces/IERC20Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IERC20Token {

contracts/erc20/contracts/src/interfaces/IEtherToken.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./IERC20Token.sol";
 

contracts/erc721/contracts/src/ERC721Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./interfaces/IERC721Token.sol";
 import "./interfaces/IERC721Receiver.sol";

contracts/erc721/contracts/src/MintableERC721Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./ERC721Token.sol";
 

contracts/erc721/contracts/src/interfaces/IERC721Receiver.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IERC721Receiver {

contracts/erc721/contracts/src/interfaces/IERC721Token.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IERC721Token {

contracts/exchange-forwarder/contracts/src/Forwarder.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./MixinWeth.sol";

contracts/exchange-forwarder/contracts/src/MixinAssets.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/Ownable.sol";

contracts/exchange-forwarder/contracts/src/MixinExchangeWrapper.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./libs/LibConstants.sol";

contracts/exchange-forwarder/contracts/src/MixinForwarderCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./libs/LibConstants.sol";

contracts/exchange-forwarder/contracts/src/MixinWeth.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibMath.sol";
 import "./libs/LibConstants.sol";

contracts/exchange-forwarder/contracts/src/interfaces/IAssets.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IAssets {

contracts/exchange-forwarder/contracts/src/interfaces/IForwarder.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./IForwarderCore.sol";

contracts/exchange-forwarder/contracts/src/interfaces/IForwarderCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange-forwarder/contracts/src/libs/LibConstants.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";

contracts/exchange-forwarder/contracts/src/libs/LibForwarderErrors.sol

@@ -17,7 +17,7 @@
 */
 
 // solhint-disable
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 /// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.

contracts/exchange-forwarder/contracts/src/mixins/MAssets.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "../interfaces/IAssets.sol";
 

contracts/exchange-forwarder/contracts/src/mixins/MExchangeWrapper.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange-forwarder/contracts/src/mixins/MWeth.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract MWeth {

contracts/exchange-libs/contracts/src/LibEIP712ExchangeDomain.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibEIP712.sol";
 

contracts/exchange-libs/contracts/src/LibExchangeSelectors.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract LibExchangeSelectors {

contracts/exchange-libs/contracts/src/LibFillResults.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 

contracts/exchange-libs/contracts/src/LibMath.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/SafeMath.sol";
 

contracts/exchange-libs/contracts/src/LibOrder.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./LibEIP712ExchangeDomain.sol";

contracts/exchange-libs/contracts/src/LibZeroExTransaction.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./LibEIP712ExchangeDomain.sol";

contracts/exchange-libs/contracts/test/TestLibs.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "../src/LibEIP712ExchangeDomain.sol";

contracts/exchange/contracts/src/Exchange.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./MixinExchangeCore.sol";

contracts/exchange/contracts/src/MixinAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/Ownable.sol";
 import "./mixins/MAssetProxyDispatcher.sol";

contracts/exchange/contracts/src/MixinExchangeCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/src/ReentrancyGuard.sol";

contracts/exchange/contracts/src/MixinExchangeRichErrors.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/RichErrors.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/MixinMatchOrders.sol

@@ -11,7 +11,7 @@
   limitations under the License.
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/src/ReentrancyGuard.sol";

contracts/exchange/contracts/src/MixinSignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";

contracts/exchange/contracts/src/MixinTransactions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibZeroExTransaction.sol";

contracts/exchange/contracts/src/MixinWrapperFunctions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/src/ReentrancyGuard.sol";

contracts/exchange/contracts/src/interfaces/IAssetProxy.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IAssetProxy {

contracts/exchange/contracts/src/interfaces/IAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IAssetProxyDispatcher {

contracts/exchange/contracts/src/interfaces/IExchange.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./IExchangeCore.sol";

contracts/exchange/contracts/src/interfaces/IExchangeCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/IMatchOrders.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/IOrderValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/ISignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/ITransactions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibZeroExTransaction.sol";

contracts/exchange/contracts/src/interfaces/IValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/IWallet.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/interfaces/IWrapperFunctions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/libs/LibExchangeRichErrorDecoder.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "../mixins/MExchangeRichErrorTypes.sol";

contracts/exchange/contracts/src/mixins/MAssetProxyDispatcher.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "../interfaces/IAssetProxyDispatcher.sol";
 

contracts/exchange/contracts/src/mixins/MExchangeCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/mixins/MExchangeRichErrorTypes.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/mixins/MRichErrorTypes.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/mixins/MExchangeRichErrors.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/mixins/MRichErrors.sol";
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/mixins/MMatchOrders.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/mixins/MSignatureValidator.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/exchange/contracts/src/mixins/MTransactions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibZeroExTransaction.sol";

contracts/exchange/contracts/src/mixins/MWrapperFunctions.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibOrder.sol";

contracts/extensions/contracts/src/BalanceThresholdFilter/BalanceThresholdFilter.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";

contracts/extensions/contracts/src/BalanceThresholdFilter/MixinBalanceThresholdFilterCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibExchangeSelectors.sol";

contracts/extensions/contracts/src/BalanceThresholdFilter/MixinExchangeCalldata.sol

@@ -17,7 +17,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "./mixins/MExchangeCalldata.sol";
 import "@0x/contracts-utils/contracts/src/LibAddressArray.sol";

contracts/extensions/contracts/src/BalanceThresholdFilter/interfaces/IBalanceThresholdFilterCore.sol

@@ -17,7 +17,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IBalanceThresholdFilterCore {

contracts/extensions/contracts/src/BalanceThresholdFilter/interfaces/IThresholdAsset.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract IThresholdAsset {

contracts/extensions/contracts/src/BalanceThresholdFilter/mixins/MBalanceThresholdFilterCore.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";
 import "../interfaces/IThresholdAsset.sol";

contracts/extensions/contracts/src/BalanceThresholdFilter/mixins/MExchangeCalldata.sol

@@ -17,7 +17,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 
 contract MExchangeCalldata {

contracts/extensions/contracts/src/DutchAuction/DutchAuction.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange/contracts/src/interfaces/IExchange.sol";

contracts/extensions/contracts/src/OrderMatcher/MixinAssets.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 
 import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 import "@0x/contracts-utils/contracts/src/Ownable.sol";

contracts/extensions/contracts/src/OrderMatcher/MixinMatchOrders.sol

@@ -16,7 +16,7 @@
 
 */
 
-pragma solidity ^0.5.5;
+pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "./libs/LibConstants.sol";