diff --git a/www/js/version.json b/www/js/version.json
index 8920f67..1e3ee75 100644
--- a/www/js/version.json
+++ b/www/js/version.json
@@ -1,5 +1,5 @@
 {
-  "VERSION": "v0.7.68",
-  "VERSION_NUMBER": "0.7.68",
-  "BUILD_DATE": "2026-06-30T13:15:02.809Z"
+  "VERSION": "v0.7.69",
+  "VERSION_NUMBER": "0.7.69",
+  "BUILD_DATE": "2026-06-30T13:19:30.001Z"
 }
diff --git a/www/ndk-worker.js b/www/ndk-worker.js
index f3f56a0..18a8611 100644
--- a/www/ndk-worker.js
+++ b/www/ndk-worker.js
@@ -4616,8 +4616,13 @@ async function handleWalletPayInvoice(requestId, invoice, mint, port) {
                 const meltQuote = await wallet.createMeltQuote(pr);
                 const quoteAmount = Number(meltQuote?.amount || 0);
                 const quoteFeeReserve = Number(meltQuote?.fee_reserve || 0);
+                // The mint's quoted fee_reserve is an estimate; the actual melt fee can be
+                // slightly higher, causing "not enough inputs provided for melt" errors.
+                // Add a safety buffer — any overpayment is returned as change proofs.
+                const FEE_RESERVE_BUFFER_SATS = 10;
                 const required = quoteAmount + quoteFeeReserve;
-                log('mint attempt:quote', { mintUrl, quoteAmount, quoteFeeReserve, required });
+                const sendAmount = required + FEE_RESERVE_BUFFER_SATS;
+                log('mint attempt:quote', { mintUrl, quoteAmount, quoteFeeReserve, required, sendAmount });
 
                 if (!Number.isFinite(required) || required <= 0) {
                     log('mint attempt:invalid-quote', { mintUrl, required });
@@ -4625,28 +4630,28 @@ async function handleWalletPayInvoice(requestId, invoice, mint, port) {
                     continue;
                 }
 
-                if (proofBalance < required) {
-                    log('mint attempt:insufficient', { mintUrl, proofBalance, required });
+                if (proofBalance < sendAmount) {
+                    log('mint attempt:insufficient', { mintUrl, proofBalance, sendAmount });
                     attemptErrors.push({ mint: mintUrl, message: `Insufficient funds on mint (${proofBalance} sats)` });
                     continue;
                 }
 
-                const sendResult = await wallet.send(required, proofs);
+                const sendResult = await wallet.send(sendAmount, proofs);
                 const keep = Array.isArray(sendResult?.keep) ? sendResult.keep : [];
                 const sendProofs = Array.isArray(sendResult?.send) ? sendResult.send : [];
-                log('mint attempt:send-split', { mintUrl, keepCount: keep.length, sendCount: sendProofs.length });
+                log('mint attempt:send-split', { mintUrl, keepCount: keep.length, sendCount: sendProofs.length, sendAmount });
 
                 const meltResult = await wallet.meltProofs(meltQuote, sendProofs);
                 const change = Array.isArray(meltResult?.change) ? meltResult.change : [];
                 upsertMintProofs(mintUrl, [...keep, ...change]);
 
                 const changeAmount = getProofTotal(change);
-                const spentAmount = Math.max(0, required - changeAmount);
+                const spentAmount = Math.max(0, sendAmount - changeAmount);
                 paidAmountSats = Number.isFinite(quoteAmount) && quoteAmount > 0
                     ? quoteAmount
                     : spentAmount;
 
-                log('mint attempt:success', { mintUrl, paidAmountSats, changeAmount, preimage: meltResult?.preimage || null });
+                log('mint attempt:success', { mintUrl, paidAmountSats, changeAmount, spentAmount, preimage: meltResult?.preimage || null });
 
                 usedMint = mintUrl;
                 payResult = meltResult;