diff --git a/.changeset/fast-timers-crash.md b/.changeset/fast-timers-crash.md
new file mode 100644
index 0000000000..f2be441756
--- /dev/null
+++ b/.changeset/fast-timers-crash.md
@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Resolved type error by explicitly typing `headers` as `HeadersInit` in CCIP.
diff --git a/src/utils/ccip.ts b/src/utils/ccip.ts
index be5c0acdf5..cac851c13c 100644
--- a/src/utils/ccip.ts
+++ b/src/utils/ccip.ts
@@ -136,7 +136,7 @@ export async function ccipRequest({
     const url = urls[i]
     const method = url.includes('{data}') ? 'GET' : 'POST'
     const body = method === 'POST' ? { data, sender } : undefined
-    const headers =
+    const headers: HeadersInit =
       method === 'POST' ? { 'Content-Type': 'application/json' } : {}
 
     try {