diff --git a/contracts/state/TSSUpgradeable.sol b/contracts/state/TSSUpgradeable.sol
index 827f917..12eda72 100644
--- a/contracts/state/TSSUpgradeable.sol
+++ b/contracts/state/TSSUpgradeable.sol
@@ -15,14 +15,14 @@ abstract contract TSSUpgradeable is UUPSSignableUpgradeable, TSSSigner {
         return _getImplementation();
     }
 
-    function _authorizeUpgrade(address) internal pure virtual override {
+    function _authorizeUpgrade(address) internal virtual override {
         revert("Upgradeable: This upgrade method is off");
     }
 
     function _authorizeUpgrade(
         address newImplementation_,
         bytes calldata proof_
-    ) internal override {
+    ) internal virtual override {
         require(newImplementation_ != address(0), "Upgradeable: Zero address");
 
         uint256 nonce_ = _getAndIncrementNonce(MAGIC_ID);
diff --git a/package-lock.json b/package-lock.json
index 632ae59..6bbba48 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@rarimo/passport-contracts",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@rarimo/passport-contracts",
-      "version": "0.1.0",
+      "version": "0.1.1",
       "license": "MIT",
       "dependencies": {
         "@iden3/contracts": "1.4.7",
diff --git a/package.json b/package.json
index 8d71f57..038d7c9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@rarimo/passport-contracts",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "license": "MIT",
   "author": "Zero Block Global Foundation",
   "readme": "README.md",