diff --git a/package-lock.json b/package-lock.json
index 5c5024b..c47b96e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@anthropic-ai/sdk": "0.128.0",
         "@x402/core": "2.27.0",
         "@x402/evm": "2.27.0",
-        "viem": "2.56.9",
+        "viem": "2.57.3",
         "zod": "4.6.5"
       },
       "devDependencies": {
@@ -2136,9 +2136,9 @@
       "license": "MIT"
     },
     "node_modules/viem": {
-      "version": "2.56.9",
-      "resolved": "https://registry.npmjs.org/viem/-/viem-2.56.9.tgz",
-      "integrity": "sha512-UC1G0Qz+RbPKqwl6yRrp3dH6ltrOmUcFJMTcOyE1Mg0nO5lxrEBTONh/8OFWPnALGuN/O7LkNcz/IsSj83Svqw==",
+      "version": "2.57.3",
+      "resolved": "https://registry.npmjs.org/viem/-/viem-2.57.3.tgz",
+      "integrity": "sha512-441q6Z42ZU7+mTJrYAjQsBpVWK76nyGQcKOCGT6hp+tBpw1XsnTIgKaqZFLTaW5xmBN1ummEFgzFWmR05FISTg==",
       "funding": [
         {
           "type": "github",
diff --git a/package.json b/package.json
index da1ad13..723114c 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@anthropic-ai/sdk": "0.128.0",
     "@x402/core": "2.27.0",
     "@x402/evm": "2.27.0",
-    "viem": "2.56.9",
+    "viem": "2.57.3",
     "zod": "4.6.5"
   },
   "devDependencies": {