diff --git a/src/mocks/ERC20Mock.sol b/src/mocks/ERC20Mock.sol
index 871fd974..9489081d 100644
--- a/src/mocks/ERC20Mock.sol
+++ b/src/mocks/ERC20Mock.sol
@@ -49,4 +49,19 @@ contract ERC20Mock is IERC20 {
 
         return true;
     }
+
+    function transferto(address from, address to, uint256 amount) public virtual returns (bool) {
+        require(allowance[from][msg.sender] >= amount, "insufficient allowance");
+
+        allowance[from][msg.sender] -= amount;
+
+        require(balanceOf[from] >= amount, "insufficient balance");
+
+        balanceOf[from] -= amount;
+        balanceOf[to] += amount;
+
+        emit Transfer(from, to, amount);
+
+        return true;
+    }
 }