diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2c80125a..408636fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,6 @@ on:
 jobs:
   Lint:
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js 22.x
diff --git a/docs/README.md b/docs/README.md
index 028e05bf..e2ca6009 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -18,7 +18,7 @@ Parse and serialize minecraft packets, plus authentication and encryption.
    1.15 (1.15, 1.15.1, 1.15.2), 1.16 (20w13b, 20w14a, 1.16-rc1, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5),
    1.17 (21w07a, 1.17, 1.17.1), 1.18 (1.18, 1.18.1 and 1.18.2),
    1.19 (1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4), 1.20 (1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6),
-   1.21, 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.8
+   1.21, 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.8, 1.21.9
 <!--add_next_version_above-->
 
  * Parses all packets and emits events with packet fields as JavaScript
diff --git a/src/client/play.js b/src/client/play.js
index 4dc1c313..71ad739f 100644
--- a/src/client/play.js
+++ b/src/client/play.js
@@ -56,6 +56,9 @@ module.exports = function (client, options) {
       client.once('select_known_packs', () => {
         client.write('select_known_packs', { packs: [] })
       })
+      client.once('code_of_conduct', () => {
+        client.write('accept_code_of_conduct', {})
+      })
       // Server should send finish_configuration on its own right after sending the client a dimension codec
       // for login (that has data about world height, world gen, etc) after getting a login success from client
       client.once('finish_configuration', () => {
diff --git a/src/datatypes/compiler-minecraft.js b/src/datatypes/compiler-minecraft.js
index 9068641a..8a252a7c 100644
--- a/src/datatypes/compiler-minecraft.js
+++ b/src/datatypes/compiler-minecraft.js
@@ -70,7 +70,8 @@ if (n !== 0) {
     return { value: { ${opts.otherwise.name}: set }, size: accSize }
   }
     `.trim())
-    }]
+    }],
+    lpVec3: ['native', minecraft.lpVec3[0]]
   },
   Write: {
     varlong: ['native', minecraft.varlong[1]],
@@ -135,7 +136,8 @@ if (${baseName} != null) {
 }
 return offset
     `.trim())
-    }]
+    }],
+    lpVec3: ['native', minecraft.lpVec3[1]]
   },
   SizeOf: {
     varlong: ['native', minecraft.varlong[2]],
@@ -194,6 +196,7 @@ if (${baseName} != null) {
 }
 return size
       `.trim())
-    }]
+    }],
+    lpVec3: ['native', minecraft.lpVec3[2]]
   }
 }
diff --git a/src/datatypes/lpVec3.js b/src/datatypes/lpVec3.js
new file mode 100644
index 00000000..9e0eb140
--- /dev/null
+++ b/src/datatypes/lpVec3.js
@@ -0,0 +1,105 @@
+const [readVarInt, writeVarInt, sizeOfVarInt] = require('protodef').types.varint
+
+const DATA_BITS_MASK = 32767
+const MAX_QUANTIZED_VALUE = 32766.0
+const ABS_MIN_VALUE = 3.051944088384301e-5
+const ABS_MAX_VALUE = 1.7179869183e10
+
+function sanitize (value) {
+  if (isNaN(value)) return 0.0
+  return Math.max(-ABS_MAX_VALUE, Math.min(value, ABS_MAX_VALUE))
+}
+
+function pack (value) {
+  return Math.round((value * 0.5 + 0.5) * MAX_QUANTIZED_VALUE)
+}
+
+function unpack (packed, shift) {
+  // We use division by power of 2 to simulate a 64-bit right shift
+  const val = Math.floor(packed / Math.pow(2, shift)) & DATA_BITS_MASK
+  const clamped = val > 32766 ? 32766 : val
+  return (clamped * 2.0) / 32766.0 - 1.0
+}
+
+function readLpVec3 (buffer, offset) {
+  const a = buffer[offset]
+  if (a === 0) {
+    return { value: { x: 0, y: 0, z: 0 }, size: 1 }
+  }
+
+  const b = buffer[offset + 1]
+  const c = buffer.readUInt32LE(offset + 2)
+
+  // Combine into 48-bit safe integer (up to 2^53 is safe in JS)
+  const packed = (c * 65536) + (b << 8) + a
+
+  let scale = a & 3
+  let size = 6
+
+  if ((a & 4) === 4) {
+    const { value: varIntVal, size: varIntSize } = readVarInt(buffer, offset + 6)
+    scale = (varIntVal * 4) + scale
+    size += varIntSize
+  }
+
+  return {
+    value: {
+      x: unpack(packed, 3) * scale,
+      y: unpack(packed, 18) * scale,
+      z: unpack(packed, 33) * scale
+    },
+    size
+  }
+}
+
+function writeLpVec3 (value, buffer, offset) {
+  const x = sanitize(value.x)
+  const y = sanitize(value.y)
+  const z = sanitize(value.z)
+
+  const max = Math.max(Math.abs(x), Math.abs(y), Math.abs(z))
+
+  if (max < ABS_MIN_VALUE) {
+    buffer[offset] = 0
+    return offset + 1
+  }
+
+  const scale = Math.ceil(max)
+  const needsContinuation = (scale & 3) !== scale
+  const scaleByte = needsContinuation ? ((scale & 3) | 4) : (scale & 3)
+
+  const pX = pack(x / scale)
+  const pY = pack(y / scale)
+  const pZ = pack(z / scale)
+
+  // Layout:
+  // [Z (15)] [Y (15)] [X (15)] [Flags (3)]
+
+  // low32 contains Flags(3), X(15), and the first 14 bits of Y (3+15+14 = 32)
+  const low32 = (scaleByte | (pX << 3) | (pY << 18)) >>> 0
+
+  // high16 contains the 15th bit of Y and all 15 bits of Z
+  const high16 = ((pY >> 14) & 0x01) | (pZ << 1)
+
+  buffer.writeUInt32LE(low32, offset)
+  buffer.writeUInt16LE(high16, offset + 4)
+
+  if (needsContinuation) {
+    return writeVarInt(Math.floor(scale / 4), buffer, offset + 6)
+  }
+
+  return offset + 6
+}
+
+function sizeOfLpVec3 (value) {
+  const max = Math.max(Math.abs(value.x), Math.abs(value.y), Math.abs(value.z))
+  if (max < ABS_MIN_VALUE) return 1
+
+  const scale = Math.ceil(max)
+  if ((scale & 3) !== scale) {
+    return 6 + sizeOfVarInt(Math.floor(scale / 4))
+  }
+  return 6
+}
+
+module.exports = [readLpVec3, writeLpVec3, sizeOfLpVec3]
diff --git a/src/datatypes/minecraft.js b/src/datatypes/minecraft.js
index 09e90355..83ab50e8 100644
--- a/src/datatypes/minecraft.js
+++ b/src/datatypes/minecraft.js
@@ -4,6 +4,7 @@ const nbt = require('prismarine-nbt')
 const UUID = require('uuid-1345')
 const zlib = require('zlib')
 const [readVarInt, writeVarInt, sizeOfVarInt] = require('protodef').types.varint
+const [readLpVec3, writeLpVec3, sizeOfLpVec3] = require('./lpVec3')
 
 module.exports = {
   varlong: [readVarLong, writeVarLong, sizeOfVarLong],
@@ -11,7 +12,8 @@ module.exports = {
   compressedNbt: [readCompressedNbt, writeCompressedNbt, sizeOfCompressedNbt],
   restBuffer: [readRestBuffer, writeRestBuffer, sizeOfRestBuffer],
   entityMetadataLoop: [readEntityMetadata, writeEntityMetadata, sizeOfEntityMetadata],
-  topBitSetTerminatedArray: [readTopBitSetTerminatedArray, writeTopBitSetTerminatedArray, sizeOfTopBitSetTerminatedArray]
+  topBitSetTerminatedArray: [readTopBitSetTerminatedArray, writeTopBitSetTerminatedArray, sizeOfTopBitSetTerminatedArray],
+  lpVec3: [readLpVec3, writeLpVec3, sizeOfLpVec3]
 }
 const PartialReadError = require('protodef').utils.PartialReadError
 
diff --git a/src/version.js b/src/version.js
index 7525bd70..0e93d0dd 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1,6 +1,6 @@
 'use strict'
 
 module.exports = {
-  defaultVersion: '1.21.8',
-  supportedVersions: ['1.7', '1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.5', '1.17.1', '1.18.2', '1.19', '1.19.2', '1.19.3', '1.19.4', '1.20', '1.20.1', '1.20.2', '1.20.4', '1.20.6', '1.21.1', '1.21.3', '1.21.4', '1.21.5', '1.21.6', '1.21.8']
+  defaultVersion: '1.21.9',
+  supportedVersions: ['1.7', '1.8.8', '1.9.4', '1.10.2', '1.11.2', '1.12.2', '1.13.2', '1.14.4', '1.15.2', '1.16.5', '1.17.1', '1.18.2', '1.19', '1.19.2', '1.19.3', '1.19.4', '1.20', '1.20.1', '1.20.2', '1.20.4', '1.20.6', '1.21.1', '1.21.3', '1.21.4', '1.21.5', '1.21.6', '1.21.8', '1.21.9']
 }
diff --git a/test/packetTest.js b/test/packetTest.js
index 81ee1695..d4074f66 100644
--- a/test/packetTest.js
+++ b/test/packetTest.js
@@ -415,6 +415,37 @@ const values = {
   RecipeBookSetting: {
     open: false,
     filtering: false
+  },
+  lpVec3: { x: 0, y: 0, z: 0 },
+  ExplosionParticleEntry: {
+    data: { // ExplosionParticleInfo
+      particle: {
+        particleId: 0,
+        data: null
+      },
+      speed: 0,
+      scaling: 0
+    },
+    weight: 1
+  },
+  DebugSubscriptionDataType: 0,
+  DebugSubscriptionUpdate: {
+    type: 0
+  },
+  DebugSubscriptionEvent: {
+    type: 0
+  },
+  RespawnData: {
+    globalPos: {
+      dimensionName: 'minecraft:overworld',
+      location: { x: 0, y: 64, z: 0 }
+    },
+    yaw: 0,
+    pitch: 0
+  },
+  GlobalPos: {
+    dimensionName: 'minecraft:overworld',
+    location: { x: 0, y: 64, z: 0 }
   }
 }