diff --git a/src/compound/contracts/ICToken.sol b/src/compound/contracts/ICToken.sol
index 39be74f..43f2f8f 100644
--- a/src/compound/contracts/ICToken.sol
+++ b/src/compound/contracts/ICToken.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.5.16;
+pragma solidity ^0.5.0;
 
 interface ICToken {
     function mint(uint mintAmount) external returns (uint);
@@ -20,4 +20,4 @@ interface ICToken {
     function approve(address, uint) external;
     function transfer(address, uint) external returns (bool);
     function transferFrom(address, address, uint) external returns (bool);
-}
\ No newline at end of file
+}