diff --git a/packages/crypto/src/keccak.ts b/packages/crypto/src/keccak.ts
index 66f647a7..4f82b047 100644
--- a/packages/crypto/src/keccak.ts
+++ b/packages/crypto/src/keccak.ts
@@ -1,6 +1,7 @@
 import { keccak_256 } from "@noble/hashes/sha3";
 
 import { HashFunction } from "./hash";
+import { toRealUint8Array } from "./utils";
 
 export class Keccak256 implements HashFunction {
   public readonly blockSize = 512 / 8;
@@ -14,7 +15,7 @@ export class Keccak256 implements HashFunction {
   }
 
   public update(data: Uint8Array): Keccak256 {
-    this.impl.update(data);
+    this.impl.update(toRealUint8Array(data));
     return this;
   }
 
diff --git a/packages/crypto/src/ripemd.ts b/packages/crypto/src/ripemd.ts
index 263e573c..2aad9402 100644
--- a/packages/crypto/src/ripemd.ts
+++ b/packages/crypto/src/ripemd.ts
@@ -1,6 +1,7 @@
 import { ripemd160 as nobleRipemd160 } from "@noble/hashes/ripemd160";
 
 import { HashFunction } from "./hash";
+import { toRealUint8Array } from "./utils";
 
 export class Ripemd160 implements HashFunction {
   public readonly blockSize = 512 / 8;
@@ -14,7 +15,7 @@ export class Ripemd160 implements HashFunction {
   }
 
   public update(data: Uint8Array): Ripemd160 {
-    this.impl.update(data);
+    this.impl.update(toRealUint8Array(data));
     return this;
   }
 
diff --git a/packages/crypto/src/sha.ts b/packages/crypto/src/sha.ts
index 25656aed..4e59e81d 100644
--- a/packages/crypto/src/sha.ts
+++ b/packages/crypto/src/sha.ts
@@ -2,6 +2,7 @@ import { sha256 as nobleSha256 } from "@noble/hashes/sha256";
 import { sha512 as nobleSha512 } from "@noble/hashes/sha512";
 
 import { HashFunction } from "./hash";
+import { toRealUint8Array } from "./utils";
 
 export class Sha256 implements HashFunction {
   public readonly blockSize = 512 / 8;
@@ -15,7 +16,7 @@ export class Sha256 implements HashFunction {
   }
 
   public update(data: Uint8Array): Sha256 {
-    this.impl.update(data);
+    this.impl.update(toRealUint8Array(data));
     return this;
   }
 
@@ -41,7 +42,7 @@ export class Sha512 implements HashFunction {
   }
 
   public update(data: Uint8Array): Sha512 {
-    this.impl.update(data);
+    this.impl.update(toRealUint8Array(data));
     return this;
   }
 
diff --git a/packages/crypto/src/utils.ts b/packages/crypto/src/utils.ts
new file mode 100644
index 00000000..9dbec0d0
--- /dev/null
+++ b/packages/crypto/src/utils.ts
@@ -0,0 +1,5 @@
+// See https://github.com/paulmillr/noble-hashes/issues/25 for why this is needed
+export function toRealUint8Array(data: ArrayLike<number>): Uint8Array {
+  if (data instanceof Uint8Array) return data;
+  else return Uint8Array.from(data);
+}