diff --git a/apps/dashboard/src/components/configure-networks/ConfigureNetworkForm.tsx b/apps/dashboard/src/components/configure-networks/ConfigureNetworkForm.tsx
index a5cbe33f45e..c1a5640f4c4 100644
--- a/apps/dashboard/src/components/configure-networks/ConfigureNetworkForm.tsx
+++ b/apps/dashboard/src/components/configure-networks/ConfigureNetworkForm.tsx
@@ -28,6 +28,7 @@ export type NetworkConfigFormData = {
   type: "testnet" | "mainnet";
   icon: string;
   slug: string;
+  stackType?: string;
 };
 
 // lowercase it, replace all spaces with hyphens, and then strip all non-alphanumeric characters
@@ -71,6 +72,7 @@ export const ConfigureNetworkForm: React.FC<NetworkConfigFormProps> = ({
       type: editingChain?.testnet ? "testnet" : "mainnet",
       icon: editingChain?.icon?.url || "",
       slug: prefillSlug || editingChain?.slug || "",
+      stackType: "",
     },
     mode: "onChange",
   });
@@ -146,6 +148,7 @@ export const ConfigureNetworkForm: React.FC<NetworkConfigFormProps> = ({
               format: "",
             },
         testnet: data.type === "testnet",
+        stackType: data.stackType || "",
       };
     } else {
       configuredNetwork = {
@@ -170,6 +173,7 @@ export const ConfigureNetworkForm: React.FC<NetworkConfigFormProps> = ({
               format: "",
             }
           : undefined,
+        stackType: data.stackType || "",
       };
     }
 
diff --git a/apps/dashboard/src/contract-ui/tabs/embed/components/embed-setup.tsx b/apps/dashboard/src/contract-ui/tabs/embed/components/embed-setup.tsx
index 04b613d7c3e..9f90151f381 100644
--- a/apps/dashboard/src/contract-ui/tabs/embed/components/embed-setup.tsx
+++ b/apps/dashboard/src/contract-ui/tabs/embed/components/embed-setup.tsx
@@ -243,6 +243,7 @@ export const EmbedSetup: React.FC<EmbedSetupProps> = ({
     shortName: "unknown",
     slug: "unknown",
     testnet: false,
+    stackType: "",
   };
 
   const { register, watch } = useForm<{
diff --git a/packages/thirdweb/src/chains/types.ts b/packages/thirdweb/src/chains/types.ts
index cb3cd41e24c..7a9298c92eb 100644
--- a/packages/thirdweb/src/chains/types.ts
+++ b/packages/thirdweb/src/chains/types.ts
@@ -82,6 +82,7 @@ export type ChainMetadata = {
     type: string;
     bridges?: Readonly<Array<{ url: string }>>;
   };
+  stackType: string;
 };
 
 /**
diff --git a/packages/thirdweb/src/chains/utils.ts b/packages/thirdweb/src/chains/utils.ts
index 769e88eb96f..5ce4eefa70d 100644
--- a/packages/thirdweb/src/chains/utils.ts
+++ b/packages/thirdweb/src/chains/utils.ts
@@ -365,5 +365,6 @@ function createChainMetadata(
         url: e.url,
         standard: "EIP3091",
       })) || data?.explorers,
+    stackType: data?.stackType || "",
   };
 }
diff --git a/packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts b/packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts
index 91a13b1f0c3..4b6901f7f39 100644
--- a/packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts
+++ b/packages/thirdweb/src/utils/any-evm/zksync/isZkSyncChain.ts
@@ -1,5 +1,5 @@
 import type { Chain } from "../../../chains/types.js";
-import { withCache } from "../../promise/withCache.js";
+import { getChainMetadata } from "../../../chains/utils.js";
 
 export async function isZkSyncChain(chain: Chain) {
   if (chain.id === 1337 || chain.id === 31337) {
@@ -12,36 +12,20 @@ export async function isZkSyncChain(chain: Chain) {
     chain.id === 300 ||
     chain.id === 302 ||
     chain.id === 11124 ||
-    chain.id === 282 || // cronos zkevm testnet
-    chain.id === 388 // cronos zkevm mainnet
+    chain.id === 282 ||
+    chain.id === 388 ||
+    chain.id === 4654 ||
+    chain.id === 333271
   ) {
     return true;
   }
 
   // fallback to checking the stack on rpc
   try {
-    const stack = await getChainStack(chain.id);
-    return stack === "zksync-stack";
+    const chainMetadata = await getChainMetadata(chain);
+    return chainMetadata.stackType === "zksync_stack";
   } catch {
     // If the network check fails, assume it's not a ZkSync chain
     return false;
   }
 }
-
-async function getChainStack(chainId: number): Promise<string> {
-  return withCache(
-    async () => {
-      const res = await fetch(`https://${chainId}.rpc.thirdweb.com/stack`);
-
-      if (!res.ok) {
-        res.body?.cancel();
-        throw new Error(`Error fetching stack for ${chainId}`);
-      }
-
-      const data = await res.json();
-
-      return data.stack;
-    },
-    { cacheKey: `stack:${chainId}`, cacheTime: 24 * 60 * 60 * 1000 },
-  );
-}