diff --git a/.changeset/shaky-dragons-check.md b/.changeset/shaky-dragons-check.md
new file mode 100644
index 00000000000..6ac0b30a1a9
--- /dev/null
+++ b/.changeset/shaky-dragons-check.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Replace celo alfajores with celoSepoliaTestnet
diff --git a/packages/thirdweb/src/chains/chain-definitions/celo-alfajores-testnet.ts b/packages/thirdweb/src/chains/chain-definitions/celo-alfajores-testnet.ts
deleted file mode 100644
index 776e91b5c60..00000000000
--- a/packages/thirdweb/src/chains/chain-definitions/celo-alfajores-testnet.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { defineChain } from "../utils.js";
-
-/**
- * @chain
- */
-export const celoAlfajoresTestnet = /* @__PURE__ */ defineChain({
-  blockExplorers: [
-    {
-      name: "Alfajoresscan",
-      url: "https://alfajores.celoscan.io",
-    },
-  ],
-  id: 44787,
-  name: "Celo Alfajores Testnet",
-  nativeCurrency: { decimals: 18, name: "CELO", symbol: "CELO" },
-  testnet: true,
-});
diff --git a/packages/thirdweb/src/chains/chain-definitions/celo-sepolia-testnet.ts b/packages/thirdweb/src/chains/chain-definitions/celo-sepolia-testnet.ts
new file mode 100644
index 00000000000..ff2c6e8f98f
--- /dev/null
+++ b/packages/thirdweb/src/chains/chain-definitions/celo-sepolia-testnet.ts
@@ -0,0 +1,17 @@
+import { defineChain } from "../utils.js";
+
+/**
+ * @chain
+ */
+export const celoSepoliaTestnet = /* @__PURE__ */ defineChain({
+  blockExplorers: [
+    {
+      name: "Celo Sepolia Explorer",
+      url: "https://celo-sepolia.blockscout.com/",
+    },
+  ],
+  id: 11142220,
+  name: "Celo Sepolia Testnet",
+  nativeCurrency: { decimals: 18, name: "CELO", symbol: "CELO-S" },
+  testnet: true,
+});
diff --git a/packages/thirdweb/src/exports/chains.ts b/packages/thirdweb/src/exports/chains.ts
index aeb45de9a60..de552aae8f2 100644
--- a/packages/thirdweb/src/exports/chains.ts
+++ b/packages/thirdweb/src/exports/chains.ts
@@ -24,7 +24,7 @@ export { blastSepolia } from "../chains/chain-definitions/blast-sepolia.js";
 export { bsc } from "../chains/chain-definitions/bsc.js";
 export { bscTestnet } from "../chains/chain-definitions/bsc-testnet.js";
 export { celo } from "../chains/chain-definitions/celo.js";
-export { celoAlfajoresTestnet } from "../chains/chain-definitions/celo-alfajores-testnet.js";
+export { celoSepoliaTestnet } from "../chains/chain-definitions/celo-sepolia-testnet.js";
 export { coreMainnet } from "../chains/chain-definitions/core-mainnet.js";
 export { coreTestnet } from "../chains/chain-definitions/core-testnet.js";
 export { cronos } from "../chains/chain-definitions/cronos.js";