diff --git a/contracts/licenses/CantBeEvilUpgradeable.sol b/contracts/licenses/CantBeEvilUpgradeable.sol
new file mode 100644
index 0000000..72223c4
--- /dev/null
+++ b/contracts/licenses/CantBeEvilUpgradeable.sol
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: MIT
+// a16z Contracts v0.0.1 (CantBeEvil.sol)
+pragma solidity ^0.8.13;
+
+import "@openzeppelin-upgradeable/contracts/utils/StringsUpgradeable.sol";
+import "@openzeppelin-upgradeable/contracts/utils/introspection/ERC165Upgradeable.sol";
+import "@openzeppelin-upgradeable/contracts/proxy/utils/Initializable.sol";
+import "./ICantBeEvil.sol";
+
+enum LicenseVersion {
+    CBE_CC0,
+    CBE_ECR,
+    CBE_NECR,
+    CBE_NECR_HS,
+    CBE_PR,
+    CBE_PR_HS
+}
+
+contract CantBeEvilUpgradeable is Initializable, ERC165Upgradeable, ICantBeEvil {
+    using StringsUpgradeable for uint;
+    
+    string internal constant _BASE_LICENSE_URI = "ar://_D9kN1WrNWbCq55BSAGRbTB4bS3v8QAPTYmBThSbX3A/";
+    LicenseVersion public licenseVersion; // return string
+    
+    // solhint-disable func-name-mixedcase
+    function __CantBeEvil_init(LicenseVersion _licenseVersion) internal onlyInitializing {
+        __CantBeEvil_init_unchained(_licenseVersion);
+    }
+
+    // solhint-disable func-name-mixedcase
+    function __CantBeEvil_init_unchained(LicenseVersion _licenseVersion) internal onlyInitializing {
+       licenseVersion = _licenseVersion;
+    }
+
+    function getLicenseURI() public view returns (string memory) {
+        return string.concat(_BASE_LICENSE_URI, uint(licenseVersion).toString());
+    }
+
+    function getLicenseName() public view returns (string memory) {
+        return _getLicenseVersionKeyByValue(licenseVersion);
+    }
+
+    function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable) returns (bool) {
+        return
+            interfaceId == type(ICantBeEvil).interfaceId ||
+            super.supportsInterface(interfaceId);
+    }
+
+    function _getLicenseVersionKeyByValue(LicenseVersion _licenseVersion) internal pure returns (string memory) {
+        require(uint8(_licenseVersion) <= 6);
+        if (LicenseVersion.CBE_CC0 == _licenseVersion) return "CBE_CC0";
+        if (LicenseVersion.CBE_ECR == _licenseVersion) return "CBE_ECR";
+        if (LicenseVersion.CBE_NECR == _licenseVersion) return "CBE_NECR";
+        if (LicenseVersion.CBE_NECR_HS == _licenseVersion) return "CBE_NECR_HS";
+        if (LicenseVersion.CBE_PR == _licenseVersion) return "CBE_PR";
+        else return "CBE_PR_HS";
+    }
+}
diff --git a/contracts/package.json b/contracts/package.json
index 0cf12bb..5ab07c8 100644
--- a/contracts/package.json
+++ b/contracts/package.json
@@ -6,7 +6,8 @@
         "**/*.sol"
     ],
     "dependencies": {
-        "@openzeppelin/contracts": "^4.7.2"
+        "@openzeppelin/contracts": "^4.7.2",
+        "@openzeppelin-upgradeable/contracts": "npm:@openzeppelin/contracts-upgradeable@^4.8.0-rc.1"
     },
     "scripts": {
         "test": "hardhat test"
diff --git a/package.json b/package.json
index 7683675..f4f8bfd 100644
--- a/package.json
+++ b/package.json
@@ -13,10 +13,11 @@
     "dotenv": "^16.0.1",
     "ethereum-waffle": "^3.4.4",
     "ethers": "^5.6.8",
-    "hardhat": "^2.9.6",
+    "hardhat": "2.9.6",
     "hardhat-gas-reporter": "^1.0.8"
   },
   "dependencies": {
+    "@openzeppelin-upgradeable/contracts": "npm:@openzeppelin/contracts-upgradeable@^4.8.0-rc.1",
     "@openzeppelin/contracts": "^4.7.2"
   },
   "scripts": {