diff --git a/contracts/utils/math/Math.sol b/contracts/utils/math/Math.sol
index 291d257b0d8..9fa1b9bc2bc 100644
--- a/contracts/utils/math/Math.sol
+++ b/contracts/utils/math/Math.sol
@@ -40,4 +40,18 @@ library Math {
         // (a + b - 1) / b can overflow on addition, so we distribute.
         return a / b + (a % b == 0 ? 0 : 1);
     }
+
+    /**
+     * @dev Returns the square root of a number.
+     */
+    function sqrt(uint256 x) public pure returns (uint256 y) {
+        uint256 z = (x + 1) / 2;
+        y = x;
+        while (z < y) {
+            y = z;
+            z = (x / z + z) / 2;
+        }
+        return y;
+    }
+    
 }