diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1615a42..b037dea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Changed
+- Remove `@metamask/eth-block-tracker` peer dependency ([#85](https://github.com/MetaMask/nonce-tracker/pull/85))
 
 ## [6.0.1]
 ### Fixed
diff --git a/package.json b/package.json
index 0194d4b..911b4b9 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,6 @@
     "@metamask/eslint-config-mocha": "^10.0.0",
     "@metamask/eslint-config-nodejs": "^10.0.0",
     "@metamask/eslint-config-typescript": "^10.0.0",
-    "@metamask/eth-block-tracker": "^9.0.3",
     "@types/node": "^16.18.59",
     "@typescript-eslint/eslint-plugin": "^5.30.7",
     "@typescript-eslint/parser": "^5.30.7",
@@ -53,9 +52,6 @@
     "typescript": "^4.0.7",
     "xtend": "^4.0.1"
   },
-  "peerDependencies": {
-    "@metamask/eth-block-tracker": ">=9"
-  },
   "engines": {
     "node": "^16.20 || ^18.16 || >=20"
   },
diff --git a/src/NonceTracker.ts b/src/NonceTracker.ts
index 51b86f5..f9ac2b6 100644
--- a/src/NonceTracker.ts
+++ b/src/NonceTracker.ts
@@ -1,9 +1,16 @@
 import assert from 'assert';
 import { Mutex } from 'async-mutex';
-import type { BlockTracker } from '@metamask/eth-block-tracker';
 
 import { Web3Provider } from '@ethersproject/providers';
 
+/**
+ * A minimal "block tracker" type, with just the method used here. This is based upon the
+ * `BlockTracker` type from `@metamask/eth-block-tracker` v9.
+ */
+type BlockTracker = {
+  getLatestBlock: () => Promise<string>;
+};
+
 /**
  * @property opts.provider - An ethereum provider
  * @property opts.blockTracker - An instance of @metamask/eth-block-tracker
diff --git a/yarn.lock b/yarn.lock
index 3da2c53..36ded2e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -65,48 +65,6 @@ __metadata:
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-  resolution: "@ethereumjs/common@npm:3.2.0"
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-    crc-32: ^1.2.0
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-    "@ethereumjs/util": ^8.1.0
-    ethereum-cryptography: ^2.0.0
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-  resolution: "@ethereumjs/util@npm:8.1.0"
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-    ethereum-cryptography: ^2.0.0
-    micro-ftch: ^0.3.1
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@@ -498,41 +456,6 @@ __metadata:
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-  resolution: "@metamask/eth-block-tracker@npm:9.0.3"
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-    "@metamask/utils": ^8.1.0
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-    pify: ^5.0.0
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-  checksum: 0321eaad6fa205a9d3ddcfaf28e63c05291614893cb2e116151185a4acbd6bb6a508d6e556b3cb8bc4d3caef4bf0a638202d9b6bdc127fbcb81715eb2660a809
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   resolution: "@metamask/nonce-tracker@workspace:."
@@ -545,7 +468,6 @@ __metadata:
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     "@metamask/eslint-config-nodejs": ^10.0.0
     "@metamask/eslint-config-typescript": ^10.0.0
-    "@metamask/eth-block-tracker": ^9.0.3
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     "@typescript-eslint/parser": ^5.30.7
@@ -563,68 +485,9 @@ __metadata:
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     typescript: ^4.0.7
     xtend: ^4.0.1
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-    uuid: ^9.0.1
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@@ -741,34 +604,6 @@ __metadata:
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-"@scure/base@npm:^1.1.3, @scure/base@npm:~1.1.0":
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@@ -776,15 +611,6 @@ __metadata:
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-"@types/debug@npm:^4.1.7":
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@@ -816,13 +642,6 @@ __metadata:
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-"@types/ms@npm:*":
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