diff --git a/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/Chain.cs b/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/Chain.cs
index 7ac49881..b30dad93 100644
--- a/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/Chain.cs
+++ b/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/Chain.cs
@@ -67,6 +67,7 @@ public enum Chain
         TestnetFrequency = 53716,
         TestnetIncentiv = 11690,
         TestnetIncentivV2 = 28802,
+        TestnetSandbox = 6252,
         
         TestnetXaiSepolia = -1, // Xai Sepolia's testnet's chain ID is too large to fit inside an int
         
diff --git a/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/ChainDictionaries.cs b/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/ChainDictionaries.cs
index 7d7484e3..7f104726 100644
--- a/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/ChainDictionaries.cs
+++ b/Packages/Sequence-Unity/Sequence/SequenceSDK/Ethereum/ChainDictionaries.cs
@@ -86,6 +86,7 @@ public ChainConfig(Chain chain, string chainId, string name, string path, string
             new (Chain.TestnetFrequency, "53716", "Frequency Testnet", "frequency-testnet", "https://explorer.frequency.zeeve.net/", "BERA", "0x0000000000000000000000000000000000000000"),
             new (Chain.TestnetIncentiv, "11690", "Incentiv Testnet", "incentiv-testnet", "https://explorer.testnet.incentiv.net/", "CENT", "0x0000000000000000000000000000000000000000"),
             new (Chain.TestnetIncentivV2, "28802", "Incentiv Testnet v2", "incentiv-testnet-v2", "https://explorer.testnet.incentiv.net/", "TCENT", "0x0000000000000000000000000000000000000000"),
+            new (Chain.TestnetSandbox, "6252", "Sandbox Testnet", "sandbox-testnet", "https://sandbox-testnet.explorer.caldera.xyz/", "SAND", "0x0000000000000000000000000000000000000000"),
         };
 
         public static Dictionary<Chain, string> NameOf;
diff --git a/Packages/Sequence-Unity/package.json b/Packages/Sequence-Unity/package.json
index f1870a52..6c281dc7 100644
--- a/Packages/Sequence-Unity/package.json
+++ b/Packages/Sequence-Unity/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xyz.0xsequence.waas-unity",
-  "version": "4.5.3",
+  "version": "4.5.4",
   "displayName": "Sequence Embedded Wallet SDK",
   "description": "A Unity SDK for Sequence APIs",
   "unity": "2021.3",