diff --git a/packages/crypto/src/p256/keypair.ts b/packages/crypto/src/p256/keypair.ts
index 4bc5a5c5e74..a858fd77093 100644
--- a/packages/crypto/src/p256/keypair.ts
+++ b/packages/crypto/src/p256/keypair.ts
@@ -1,7 +1,10 @@
 import { p256 } from '@noble/curves/p256'
 import { sha256 } from '@noble/hashes/sha256'
 import { SupportedEncodings } from 'uint8arrays/to-string'
-import { fromString, toString } from 'uint8arrays'
+import {
+  fromString as ui8FromString,
+  toString as ui8ToString,
+} from 'uint8arrays'
 
 import * as did from '../did'
 import { P256_JWT_ALG } from '../const'
@@ -33,7 +36,7 @@ export class P256Keypair implements Keypair {
   ): Promise<P256Keypair> {
     const { exportable = false } = opts || {}
     const privKeyBytes =
-      typeof privKey === 'string' ? fromString(privKey, 'hex') : privKey
+      typeof privKey === 'string' ? ui8FromString(privKey, 'hex') : privKey
     return new P256Keypair(privKeyBytes, exportable)
   }
 
@@ -42,7 +45,7 @@ export class P256Keypair implements Keypair {
   }
 
   publicKeyStr(encoding: SupportedEncodings = 'base64pad'): string {
-    return toString(this.publicKey, encoding)
+    return ui8ToString(this.publicKey, encoding)
   }
 
   did(): string {
diff --git a/packages/crypto/src/secp256k1/keypair.ts b/packages/crypto/src/secp256k1/keypair.ts
index 4fc2b10515f..4391e01add9 100644
--- a/packages/crypto/src/secp256k1/keypair.ts
+++ b/packages/crypto/src/secp256k1/keypair.ts
@@ -1,6 +1,9 @@
 import { secp256k1 as k256 } from '@noble/curves/secp256k1'
 import { sha256 } from '@noble/hashes/sha256'
-import { fromString, toString } from 'uint8arrays'
+import {
+  fromString as ui8FromString,
+  toString as ui8ToString,
+} from 'uint8arrays'
 import { SupportedEncodings } from 'uint8arrays/to-string'
 
 import { SECP256K1_JWT_ALG } from '../const'
@@ -33,7 +36,7 @@ export class Secp256k1Keypair implements Keypair {
   ): Promise<Secp256k1Keypair> {
     const { exportable = false } = opts || {}
     const privKeyBytes =
-      typeof privKey === 'string' ? fromString(privKey, 'hex') : privKey
+      typeof privKey === 'string' ? ui8FromString(privKey, 'hex') : privKey
     return new Secp256k1Keypair(privKeyBytes, exportable)
   }
 
@@ -42,7 +45,7 @@ export class Secp256k1Keypair implements Keypair {
   }
 
   publicKeyStr(encoding: SupportedEncodings = 'base64pad'): string {
-    return toString(this.publicKey, encoding)
+    return ui8ToString(this.publicKey, encoding)
   }
 
   did(): string {