diff --git a/adapters/wagmi-connector/src/connector.ts b/adapters/wagmi-connector/src/connector.ts
index 96a83f4c..7cddfb36 100644
--- a/adapters/wagmi-connector/src/connector.ts
+++ b/adapters/wagmi-connector/src/connector.ts
@@ -133,23 +133,23 @@ class BloctoConnector extends Connector<BloctoProvider, BloctoOptions> {
   }
 
   async switchChain(chainId: number): Promise<Chain> {
-    const provider = await this.getProvider();
-    const id = numberToHex(chainId);
-    const chain = this.chains.find((x) => x.id === chainId);
-    const { networks } = await fetch(
-      'https://api.blocto.app/networks/evm'
-    ).then((response) => response.json());
-    const evmSupportMap = networks.reduce(
-      (a: any, v: any) => ({ ...a, [v.chain_id]: v }),
-      {}
-    );
-    const isBloctoSupportChain = evmSupportMap[`${chainId}`];
-
-    if (!chain || !isBloctoSupportChain) {
-      throw new SwitchChainError(new Error(`Blocto unsupported chain: ${id}`));
-    }
-
     try {
+      const provider = await this.getProvider();
+      const id = numberToHex(chainId);
+      const chain = this.chains.find((x) => x.id === chainId);
+      const networks = await provider.supportChainList();
+      const evmSupportMap = networks.reduce(
+        (a: any, v: any) => ({ ...a, [v.chain_id]: v }),
+        {}
+      );
+      const isBloctoSupportChain = evmSupportMap[`${chainId}`];
+
+      if (!chain || !isBloctoSupportChain) {
+        throw new SwitchChainError(
+          new Error(`Blocto unsupported chain: ${id}`)
+        );
+      }
+
       await provider.request({
         method: 'wallet_addEthereumChain',
         params: [{ chainId: id, rpcUrls: chain?.rpcUrls.default.http }],