diff --git a/contracts/crowdsale/validation/PausableCrowdsale.sol b/contracts/crowdsale/validation/PausableCrowdsale.sol
index 65fb0019fc8..71a4d14421a 100644
--- a/contracts/crowdsale/validation/PausableCrowdsale.sol
+++ b/contracts/crowdsale/validation/PausableCrowdsale.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.18;
+pragma solidity ^0.4.24;
 
 import "../Crowdsale.sol";
 import "../../lifecycle/Pausable.sol";
diff --git a/contracts/mocks/PausableCrowdsaleImpl.sol b/contracts/mocks/PausableCrowdsaleImpl.sol
index 64b4bc578d0..1eddc11b9ba 100644
--- a/contracts/mocks/PausableCrowdsaleImpl.sol
+++ b/contracts/mocks/PausableCrowdsaleImpl.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.4.18;
+pragma solidity ^0.4.24;
 
 import "../token/ERC20/ERC20.sol";
 import "../crowdsale/validation/PausableCrowdsale.sol";