3 files changed, 4 insertions, 8 deletions
diff --git a/packages/assert/package.json b/packages/assert/package.json
index 65b163c21..2fb7746a8 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -38,8 +38,8 @@
   },
   "dependencies": {
     "@0xproject/json-schemas": "^0.6.10",
+    "@0xproject/utils": "^0.1.0",
     "bignumber.js": "~4.1.0",
-    "ethereum-address": "^0.0.4",
     "lodash": "^4.17.4",
     "valid-url": "^1.0.9"
   }
diff --git a/packages/assert/src/globals.d.ts b/packages/assert/src/globals.d.ts
index cc47f3113..91ed2021e 100644
--- a/packages/assert/src/globals.d.ts
+++ b/packages/assert/src/globals.d.ts
@@ -1,5 +1 @@
 declare module 'dirty-chai';
-
-declare module 'ethereum-address' {
-    const isAddress: (arg: any) => boolean;
-}
diff --git a/packages/assert/src/index.ts b/packages/assert/src/index.ts
index 92bcf6f03..fadc31d09 100644
--- a/packages/assert/src/index.ts
+++ b/packages/assert/src/index.ts
@@ -2,8 +2,8 @@ import {
     Schema,
     SchemaValidator,
 } from '@0xproject/json-schemas';
+import {addressUtils} from '@0xproject/utils';
 import BigNumber from 'bignumber.js';
-import * as ethereum_address from 'ethereum-address';
 import * as _ from 'lodash';
 import * as validUrl from 'valid-url';
 
@@ -35,9 +35,9 @@ export const assert = {
             this.typeAssertionMessage(variableName, 'HexString', value));
     },
     isETHAddressHex(variableName: string, value: string): void {
-        this.assert(ethereum_address.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
+        this.assert(addressUtils.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
         this.assert(
-            ethereum_address.isAddress(value) && value.toLowerCase() === value,
+            addressUtils.isAddress(value) && value.toLowerCase() === value,
             `Checksummed addresses are not supported. Convert ${variableName} to lower case before passing`,
         );
     },