diff --git a/lib/bcoin/mempool.js b/lib/bcoin/mempool.js
index d018d13a..24c5b5ec 100644
--- a/lib/bcoin/mempool.js
+++ b/lib/bcoin/mempool.js
@@ -1825,7 +1825,7 @@ MempoolEntry.prototype.toRaw = function toRaw() {
   var p = new BufferWriter();
   bcoin.protocol.framer.tx(this.tx, p);
   p.writeU32(this.height);
-  p.writeU64(this.priority);
+  p.writeDouble(this.priority);
   p.writeVarint(this.chainValue);
   p.writeU32(this.ts);
   p.writeU32(this.count);
@@ -1845,7 +1845,7 @@ MempoolEntry.fromRaw = function fromRaw(data) {
   return new MempoolEntry({
     tx: bcoin.tx.fromRaw(p),
     height: p.readU32(),
-    priority: p.readU53(),
+    priority: p.readDouble(),
     chainValue: p.readVarint(),
     ts: p.readU32(),
     count: p.readU32(),
diff --git a/lib/bcoin/reader.js b/lib/bcoin/reader.js
index 25cdc9dd..f05fd0b7 100644
--- a/lib/bcoin/reader.js
+++ b/lib/bcoin/reader.js
@@ -545,6 +545,58 @@ BufferReader.prototype.verifyChecksum = function verifyChecksum() {
   return checksum;
 };
 
+/**
+ * Read float le.
+ * @returns {Number}
+ */
+
+BufferReader.prototype.readFloat = function readFloat() {
+  var ret;
+  assert(this.offset + 4 <= this.data.length);
+  ret = this.data.readFloatLE(this.offset, true);
+  this.offset += 4;
+  return ret;
+};
+
+/**
+ * Read float be.
+ * @returns {Number}
+ */
+
+BufferReader.prototype.readFloatBE = function readFloatBE() {
+  var ret;
+  assert(this.offset + 4 <= this.data.length);
+  ret = this.data.readFloatBE(this.offset, true);
+  this.offset += 4;
+  return ret;
+};
+
+/**
+ * Read double float le.
+ * @returns {Number}
+ */
+
+BufferReader.prototype.readDouble = function readDouble() {
+  var ret;
+  assert(this.offset + 8 <= this.data.length);
+  ret = this.data.readDoubleLE(this.offset, true);
+  this.offset += 8;
+  return ret;
+};
+
+/**
+ * Read double float be.
+ * @returns {Number}
+ */
+
+BufferReader.prototype.readDoubleBE = function readDoubleBE() {
+  var ret;
+  assert(this.offset + 8 <= this.data.length);
+  ret = this.data.readDoubleBE(this.offset, true);
+  this.offset += 8;
+  return ret;
+};
+
 /*
  * Expose
  */
diff --git a/lib/bcoin/writer.js b/lib/bcoin/writer.js
index 05b552c8..7437cd18 100644
--- a/lib/bcoin/writer.js
+++ b/lib/bcoin/writer.js
@@ -62,6 +62,10 @@ BufferWriter.prototype.render = function render(keep) {
       case '32be': off += utils.write32BE(data, item[1], off); break;
       case '64': off += utils.write64(data, item[1], off); break;
       case '64be': off += utils.write64BE(data, item[1], off); break;
+      case 'f': data.writeFloatLE(item[1], off, true); off += 4; break;
+      case 'fbe': data.writeFloatBE(item[1], off, true); off += 4; break;
+      case 'd': data.writeDoubleLE(item[1], off, true); off += 8; break;
+      case 'dbe': data.writeDoubleBE(item[1], off, true); off += 8; break;
       case 'varint': off += utils.writeVarint(data, item[1], off); break;
       case 'bytes': off += item[1].copy(data, off); break;
       case 'str': off += data.write(item[1], off, item[2]); break;
@@ -350,6 +354,50 @@ BufferWriter.prototype.fill = function fill(value, size) {
   this.data.push(['bytes', buf]);
 };
 
+/**
+ * Write float le.
+ * @param {Number} value
+ */
+
+BufferWriter.prototype.writeFloat = function writeFloat(value) {
+  assert(typeof value === 'number');
+  this.written += 4;
+  this.data.push(['f', value]);
+};
+
+/**
+ * Write float be.
+ * @param {Number} value
+ */
+
+BufferWriter.prototype.writeFloatBE = function writeFloatBE(value) {
+  assert(typeof value === 'number');
+  this.written += 4;
+  this.data.push(['fbe', value]);
+};
+
+/**
+ * Write double le.
+ * @param {Number} value
+ */
+
+BufferWriter.prototype.writeDouble = function writeDouble(value) {
+  assert(typeof value === 'number');
+  this.written += 8;
+  this.data.push(['d', value]);
+};
+
+/**
+ * Write double be.
+ * @param {Number} value
+ */
+
+BufferWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
+  assert(typeof value === 'number');
+  this.written += 8;
+  this.data.push(['dbe', value]);
+};
+
 /*
  * Expose
  */