diff --git a/package.json b/package.json
index fc9b5a2..203da7d 100644
--- a/package.json
+++ b/package.json
@@ -56,6 +56,7 @@
   },
   "dependencies": {
     "async.nexttick": "^0.5.2",
+    "buffer": "^5.6.0",
     "debug": "^4.1.1",
     "it-length-prefixed": "^3.0.0",
     "it-pipe": "^1.0.1",
diff --git a/src/index.js b/src/index.js
index a5a9c78..5de8602 100644
--- a/src/index.js
+++ b/src/index.js
@@ -10,7 +10,7 @@ const lp = require('it-length-prefixed')
 const pMap = require('p-map')
 const TimeCache = require('time-cache')
 const nextTick = require('async.nexttick')
-
+const { Buffer } = require('buffer')
 const PeerId = require('peer-id')
 const BaseProtocol = require('libp2p-pubsub')
 const { message, utils } = require('libp2p-pubsub')
diff --git a/test/2-nodes.spec.js b/test/2-nodes.spec.js
index c0b828c..fd7c78d 100644
--- a/test/2-nodes.spec.js
+++ b/test/2-nodes.spec.js
@@ -6,7 +6,7 @@ const chai = require('chai')
 chai.use(require('dirty-chai'))
 chai.use(require('chai-spies'))
 const expect = chai.expect
-
+const { Buffer } = require('buffer')
 const pDefer = require('p-defer')
 const times = require('lodash/times')
 
diff --git a/test/emit-self.spec.js b/test/emit-self.spec.js
index 03bcd29..512e519 100644
--- a/test/emit-self.spec.js
+++ b/test/emit-self.spec.js
@@ -5,7 +5,7 @@ const chai = require('chai')
 chai.use(require('dirty-chai'))
 chai.use(require('chai-spies'))
 const expect = chai.expect
-
+const { Buffer } = require('buffer')
 const FloodSub = require('../src')
 
 const {
diff --git a/test/multiple-nodes.spec.js b/test/multiple-nodes.spec.js
index fec2ea1..c810cfe 100644
--- a/test/multiple-nodes.spec.js
+++ b/test/multiple-nodes.spec.js
@@ -5,7 +5,7 @@
 const chai = require('chai')
 chai.use(require('dirty-chai'))
 const expect = chai.expect
-
+const { Buffer } = require('buffer')
 const pDefer = require('p-defer')
 
 const FloodSub = require('../src')
diff --git a/test/pubsub.spec.js b/test/pubsub.spec.js
index abf1a19..cf4dbdc 100644
--- a/test/pubsub.spec.js
+++ b/test/pubsub.spec.js
@@ -6,7 +6,7 @@ const chai = require('chai')
 chai.use(require('dirty-chai'))
 const expect = chai.expect
 const sinon = require('sinon')
-
+const { Buffer } = require('buffer')
 const Floodsub = require('../src')
 const { createPeerId, mockRegistrar } = require('./utils')
 const { utils } = require('libp2p-pubsub')