diff --git a/package.json b/package.json
index 6191b95..b18773e 100644
--- a/package.json
+++ b/package.json
@@ -32,22 +32,23 @@
   },
   "homepage": "https://github.com/ipfs/js-datastore-pubsub#readme",
   "dependencies": {
+    "buffer": "^5.6.0",
     "debug": "^4.1.1",
     "err-code": "^2.0.0",
     "interface-datastore": "~0.8.0",
-    "multibase": "~0.6.0"
+    "multibase": "~0.7.0"
   },
   "devDependencies": {
-    "aegir": "^20.5.0",
+    "aegir": "^21.9.0",
     "chai": "^4.2.0",
     "detect-node": "^2.0.4",
     "dirty-chai": "^2.0.1",
     "it-pair": "^1.0.0",
-    "libp2p-gossipsub": "0.2.0",
+    "libp2p-gossipsub": "^0.3.0",
     "libp2p-record": "~0.7.0",
     "p-wait-for": "^3.1.0",
     "peer-id": "^0.13.6",
-    "peer-info": "^0.16.2",
+    "peer-info": "^0.17.5",
     "sinon": "^7.4.1"
   },
   "contributors": [
diff --git a/src/index.js b/src/index.js
index c7799f9..ffa6ebc 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,5 +1,6 @@
 'use strict'
 
+const { Buffer } = require('buffer')
 const { Key } = require('interface-datastore')
 const { encodeBase32, keyToTopic, topicToKey } = require('./utils')
 
diff --git a/test/index.spec.js b/test/index.spec.js
index 93c07ee..98fcdfa 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -1,6 +1,7 @@
 /* eslint-env mocha */
 'use strict'
 
+const { Buffer } = require('buffer')
 const chai = require('chai')
 const dirtyChai = require('dirty-chai')
 const expect = chai.expect