diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea330b9..14d14ef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 0.3.1 (2024-05-21)
+
+- Fix upgrade interface version detection in `upgradeProxy` function. ([#53](https://github.com/OpenZeppelin/openzeppelin-foundry-upgrades/pull/53))
+
 ## 0.3.0 (2024-05-14)
 
 - Adds library variations to support `forge coverage` or upgrade existing deployments using OpenZeppelin Contracts v4. ([#50](https://github.com/OpenZeppelin/openzeppelin-foundry-upgrades/pull/50))
diff --git a/src/internal/Core.sol b/src/internal/Core.sol
index 79dbed4..de292e8 100644
--- a/src/internal/Core.sol
+++ b/src/internal/Core.sol
@@ -303,7 +303,7 @@ library Core {
     using strings for *;
 
     function _getUpgradeInterfaceVersion(address addr) private returns (string memory) {
-        (bool success, bytes memory returndata) = addr.call(abi.encodeWithSignature("getUpgradeInterfaceVersion()"));
+        (bool success, bytes memory returndata) = addr.call(abi.encodeWithSignature("UPGRADE_INTERFACE_VERSION()"));
         if (success) {
             return abi.decode(returndata, (string));
         } else {
diff --git a/test/UnsafeUpgrades.t.sol b/test/UnsafeUpgrades.t.sol
index 6aa6558..70f92fe 100644
--- a/test/UnsafeUpgrades.t.sol
+++ b/test/UnsafeUpgrades.t.sol
@@ -40,6 +40,19 @@ contract UnsafeUpgradesTest is Test {
         assertFalse(implAddressV2 == implAddressV1);
     }
 
+    function testUUPS_upgradeWithoutData() public {
+        address proxy = UnsafeUpgrades.deployUUPSProxy(
+            address(new GreeterProxiable()),
+            abi.encodeCall(Greeter.initialize, (msg.sender, "hello"))
+        );
+        address implAddressV1 = UnsafeUpgrades.getImplementationAddress(proxy);
+
+        UnsafeUpgrades.upgradeProxy(proxy, address(new GreeterV2Proxiable()), "", msg.sender);
+        address implAddressV2 = UnsafeUpgrades.getImplementationAddress(proxy);
+
+        assertFalse(implAddressV2 == implAddressV1);
+    }
+
     function testTransparent() public {
         address proxy = UnsafeUpgrades.deployTransparentProxy(
             address(new Greeter()),
@@ -68,6 +81,25 @@ contract UnsafeUpgradesTest is Test {
         assertFalse(implAddressV2 == implAddressV1);
     }
 
+    function testTransparent_upgradeWithoutData() public {
+        address proxy = UnsafeUpgrades.deployTransparentProxy(
+            address(new Greeter()),
+            msg.sender,
+            abi.encodeCall(Greeter.initialize, (msg.sender, "hello"))
+        );
+        address implAddressV1 = UnsafeUpgrades.getImplementationAddress(proxy);
+        address adminAddress = UnsafeUpgrades.getAdminAddress(proxy);
+
+        assertFalse(adminAddress == address(0));
+
+        UnsafeUpgrades.upgradeProxy(proxy, address(new GreeterV2()), "", msg.sender);
+        address implAddressV2 = UnsafeUpgrades.getImplementationAddress(proxy);
+
+        assertEq(UnsafeUpgrades.getAdminAddress(proxy), adminAddress);
+
+        assertFalse(implAddressV2 == implAddressV1);
+    }
+
     function testBeacon() public {
         address beacon = UnsafeUpgrades.deployBeacon(address(new Greeter()), msg.sender);
         address implAddressV1 = IBeacon(beacon).implementation();
diff --git a/test/Upgrades.t.sol b/test/Upgrades.t.sol
index f784a8c..d13eb68 100644
--- a/test/Upgrades.t.sol
+++ b/test/Upgrades.t.sol
@@ -42,6 +42,19 @@ contract UpgradesTest is Test {
         assertFalse(implAddressV2 == implAddressV1);
     }
 
+    function testUUPS_upgradeWithoutData() public {
+        address proxy = Upgrades.deployUUPSProxy(
+            "GreeterProxiable.sol",
+            abi.encodeCall(Greeter.initialize, (msg.sender, "hello"))
+        );
+        address implAddressV1 = Upgrades.getImplementationAddress(proxy);
+
+        Upgrades.upgradeProxy(proxy, "GreeterV2Proxiable.sol", "", msg.sender);
+        address implAddressV2 = Upgrades.getImplementationAddress(proxy);
+
+        assertFalse(implAddressV2 == implAddressV1);
+    }
+
     function testTransparent() public {
         address proxy = Upgrades.deployTransparentProxy(
             "Greeter.sol",
@@ -65,6 +78,25 @@ contract UpgradesTest is Test {
         assertFalse(implAddressV2 == implAddressV1);
     }
 
+    function testTransparent_upgradeWithoutData() public {
+        address proxy = Upgrades.deployTransparentProxy(
+            "Greeter.sol",
+            msg.sender,
+            abi.encodeCall(Greeter.initialize, (msg.sender, "hello"))
+        );
+        address implAddressV1 = Upgrades.getImplementationAddress(proxy);
+        address adminAddress = Upgrades.getAdminAddress(proxy);
+
+        assertFalse(adminAddress == address(0));
+
+        Upgrades.upgradeProxy(proxy, "GreeterV2.sol", "", msg.sender);
+        address implAddressV2 = Upgrades.getImplementationAddress(proxy);
+
+        assertEq(Upgrades.getAdminAddress(proxy), adminAddress);
+
+        assertFalse(implAddressV2 == implAddressV1);
+    }
+
     function testBeacon() public {
         address beacon = Upgrades.deployBeacon("Greeter.sol", msg.sender);
         address implAddressV1 = IBeacon(beacon).implementation();