diff --git a/.changeset/tidy-toes-scream.md b/.changeset/tidy-toes-scream.md
new file mode 100644
index 0000000000..de14d579e9
--- /dev/null
+++ b/.changeset/tidy-toes-scream.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Updated Avalanche explorer URLs.
diff --git a/src/chains/definitions/avalanche.ts b/src/chains/definitions/avalanche.ts
index 5761156b13..ca1613be9e 100644
--- a/src/chains/definitions/avalanche.ts
+++ b/src/chains/definitions/avalanche.ts
@@ -13,9 +13,9 @@ export const avalanche = /*#__PURE__*/ defineChain({
   },
   blockExplorers: {
     default: {
-      name: 'SnowScan',
-      url: 'https://snowscan.xyz',
-      apiUrl: 'https://api.snowscan.xyz/api',
+      name: 'SnowTrace',
+      url: 'https://snowtrace.io',
+      apiUrl: 'https://api.snowtrace.io',
     },
   },
   contracts: {
diff --git a/src/chains/definitions/avalancheFuji.ts b/src/chains/definitions/avalancheFuji.ts
index 5eaee48243..a5fdcedd9f 100644
--- a/src/chains/definitions/avalancheFuji.ts
+++ b/src/chains/definitions/avalancheFuji.ts
@@ -13,9 +13,9 @@ export const avalancheFuji = /*#__PURE__*/ defineChain({
   },
   blockExplorers: {
     default: {
-      name: 'SnowScan',
-      url: 'https://testnet.snowscan.xyz',
-      apiUrl: 'https://api-testnet.snowscan.xyz',
+      name: 'SnowTrace',
+      url: 'https://testnet.snowtrace.io',
+      apiUrl: 'https://api-testnet.snowtrace.io',
     },
   },
   contracts: {