diff --git a/lib/rpc.ts b/lib/rpc.ts
index 4a873171..1c3f2278 100644
--- a/lib/rpc.ts
+++ b/lib/rpc.ts
@@ -26,13 +26,13 @@ export const publicClient = createPublicClient({
  * Load-balanced RPC nodes may not have the receipt immediately after
  * `waitForTransactionReceipt` completes on the client side.
  */
-export async function getReceiptWithRetry(hash: Hex, maxAttempts = 3) {
+export async function getReceiptWithRetry(hash: Hex, maxAttempts = 5) {
   for (let attempt = 1; attempt <= maxAttempts; attempt++) {
     try {
       return await publicClient.getTransactionReceipt({ hash });
     } catch (err) {
       if (attempt === maxAttempts) throw err;
-      await new Promise((r) => setTimeout(r, attempt * 1000));
+      await new Promise((r) => setTimeout(r, attempt * 2000));
     }
   }
   throw new Error("unreachable");
diff --git a/src/components/DonateWidget.tsx b/src/components/DonateWidget.tsx
index f091abcb..4cc1b28c 100644
--- a/src/components/DonateWidget.tsx
+++ b/src/components/DonateWidget.tsx
@@ -88,8 +88,9 @@ export function DonateWidget({ storylineId }: DonateWidgetProps) {
       setTxState("pending");
       await publicClient.waitForTransactionReceipt({ hash });
 
-      // Trigger donation indexer
+      // Trigger donation indexer (delay for RPC propagation on Base Sepolia)
       setTxState("indexing");
+      await new Promise((r) => setTimeout(r, 5000));
       const indexRes = await fetch("/api/index/donation", {
         method: "POST",
         headers: { "Content-Type": "application/json" },