diff --git a/contracts/mocks/EnumerableSetMock.sol b/contracts/mocks/EnumerableSetMock.sol
index 1cc5f842e..10c4470de 100644
--- a/contracts/mocks/EnumerableSetMock.sol
+++ b/contracts/mocks/EnumerableSetMock.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.10;
+pragma solidity ^0.5.0;
 import "../utils/EnumerableSet.sol";
 
 
diff --git a/contracts/utils/EnumerableSet.sol b/contracts/utils/EnumerableSet.sol
index 94323b4fd..7f1855276 100644
--- a/contracts/utils/EnumerableSet.sol
+++ b/contracts/utils/EnumerableSet.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.10;
+pragma solidity ^0.5.0;
 
 
 /**