diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index c83b7a8..08b7e3d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -11,14 +11,14 @@ env:
 
 jobs:
   msrv:
-    name: Verify MSRV (1.96)
+    name: Verify MSRV (1.99)
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Rust Toolchain (1.96)
-        uses: dtolnay/rust-toolchain@1.96.0
+      - name: Install Rust Toolchain (1.99)
+        uses: dtolnay/rust-toolchain@1.99.0
 
       - name: Check
         run: cargo check --all-features
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 57a275f..8f3af78 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project are documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.2.0] - 2026-10-08
+
+### Changed
+
+- Migrated the `FingerprintView` implementation bodies (30 key views) and the custom-codec test builder from the removed `Builder::new_from_bytes` API to the streaming shape `Builder::new(codec)?` + `update(bytes)` + `output_len(32)` + `try_build()`. The value 32 preserves the 32-byte fingerprints multi-hash 1.x produced. Requirement `multi-hash` raised 1.1 → 2.0. The crate requires multi-hash 2.0.0, which declares `rust-version = "1.99"`. No public API changes.
+- Raised `rust-version` from 1.96 to 1.99 and applied clippy 0.1.99 fixes.
+
 ## [2.1.1] - 2026-10-07
 
 ### Changed
@@ -265,6 +272,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Major dependency updates: ed25519-dalek 3, blsful 4, elliptic-curve 0.14, vsss-rs 6, ssh-key 0.7.
 - Initial published release on crates.io as `multi-key`.
 
+[2.2.0]: https://github.com/cryptidtech/multi-key/compare/v2.1.1...v2.2.0
 [2.1.1]: https://github.com/cryptidtech/multi-key/compare/v2.1.0...v2.1.1
 [2.1.0]: https://github.com/cryptidtech/multi-key/compare/v2.0.0...v2.1.0
 [1.1.1]: https://github.com/cryptidtech/multi-key/compare/v1.1.0...v1.1.1
diff --git a/Cargo.toml b/Cargo.toml
index ce01927..3bc4248 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
 name = "multi-key"
-version = "2.1.1"
+version = "2.2.0"
 edition = "2024"
-rust-version = "1.96"
+rust-version = "1.99"
 authors = ["Dave Grantham <dwg@linuxprogrammer.org>"]
 description = "Multikey self-describing cryptographic key data"
 repository = "https://github.com/cryptidtech/multi-key.git"
@@ -52,11 +52,11 @@ mceliece348864 = { version = "1.0", optional = true }
 ml-dsa = "0.1.1"
 ml-kem = "0.3"
 multi-base = { version = "1.0", default-features = false }
-multi-codec = "1.5"
-multi-hash = "1.1"
-multi-sig = "1.5"
-multi-trait = { version = "1.0", default-features = false }
-multi-util = "1.1"
+multi-codec = "1.6"
+multi-hash = "2.0"
+multi-sig = "1.6"
+multi-trait = { version = "1.1", default-features = false }
+multi-util = "1.2"
 p256 = { version = "0.14", features = ["ecdsa", "ecdh"] }
 p384 = { version = "0.14", features = ["ecdsa", "ecdh"] }
 p521 = { version = "0.14", features = ["ecdsa", "ecdh"] }
@@ -83,7 +83,7 @@ sntrup = "0.4.0"
 ssh-encoding = "0.3"
 subtle = "2"
 thiserror = { version = "2.0" }
-typenum = "1.17"
+typenum = "1.20"
 unsigned-varint = { version = "0.8", features = ["std"] }
 vsss-rs = "6.0"
 x25519-dalek = { version = "3.0", features = ["static_secrets", "getrandom"] }
@@ -91,23 +91,23 @@ zeroize = "1"
 # Lamport support (feature-gated, default-enabled)
 lamport_signature_plus = { version = "0.5.0", optional = true }
 sha3 = { version = "0.12", optional = true }
-blake2 = { version = "0.11.0-rc.6", optional = true }
+blake2 = { version = "0.11.0", optional = true }
 shake = { version = "0.1", optional = true }
 # XMSS support (feature-gated, default-enabled)
 xmss = { version = "0.1.0-pre.0", optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-blsful = { version = "4.0.0", default-features = false, features = ["rust"] }
+blsful = { version = "4.1.0", default-features = false, features = ["rust"] }
 getrandom_02 = { package = "getrandom", version = "0.2", features = ["js"] }
 ssh-key = { version = "0.7.0-rc.11", default-features = false, features = ["alloc", "ecdsa", "ed25519", "p256", "p384", "p521"] }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-blsful = { version = "4.0.0", default-features = false, features = ["blst"] }
+blsful = { version = "4.1.0", default-features = false, features = ["blst"] }
 ssh-key = { version = "0.7.0-rc.11", default-features = false, features = ["alloc", "ecdsa", "ed25519", "p256", "p384", "p521"] }
 
 [dev-dependencies]
 criterion = { version = "0.8", features = ["html_reports"] }
-proptest = "1.4"
+proptest = "1.11"
 serde_json = "1.0"
 serde_test = "1.0"
 
diff --git a/src/error.rs b/src/error.rs
index 02f3e0c..5372192 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -450,7 +450,7 @@ mod tests {
     #[test]
     fn test_error_display() {
         let err = Error::MissingSigil;
-        assert!(!err.to_string().is_empty());
+        assert_ne!(err.to_string(), "");
     }
 
     #[test]
diff --git a/src/views/bls12381.rs b/src/views/bls12381.rs
index e32c235..cf4dbbc 100644
--- a/src/views/bls12381.rs
+++ b/src/views/bls12381.rs
@@ -370,7 +370,10 @@ impl<'a> FingerprintView for View<'a> {
                 kd.key_bytes()?
             };
             // hash the key bytes using the given codec
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/bls12381_g1_fndsa512.rs b/src/views/bls12381_g1_fndsa512.rs
index dc5b2d4..09c6065 100644
--- a/src/views/bls12381_g1_fndsa512.rs
+++ b/src/views/bls12381_g1_fndsa512.rs
@@ -125,7 +125,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/bls12381_g1_mayo1.rs b/src/views/bls12381_g1_mayo1.rs
index e96e3d1..c3da4c8 100644
--- a/src/views/bls12381_g1_mayo1.rs
+++ b/src/views/bls12381_g1_mayo1.rs
@@ -121,7 +121,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/bls12381_g1_mayo2.rs b/src/views/bls12381_g1_mayo2.rs
index 027da65..c4f86f6 100644
--- a/src/views/bls12381_g1_mayo2.rs
+++ b/src/views/bls12381_g1_mayo2.rs
@@ -121,7 +121,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/bls12381_g1_mldsa65.rs b/src/views/bls12381_g1_mldsa65.rs
index 066c48f..fee2c1f 100644
--- a/src/views/bls12381_g1_mldsa65.rs
+++ b/src/views/bls12381_g1_mldsa65.rs
@@ -132,7 +132,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/chacha20.rs b/src/views/chacha20.rs
index a117ebb..085ca55 100644
--- a/src/views/chacha20.rs
+++ b/src/views/chacha20.rs
@@ -335,6 +335,9 @@ impl<'a> FingerprintView for View<'a> {
             kd.key_bytes()?
         };
         // hash the key bytes using the given codec
-        Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(bytes);
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
diff --git a/src/views/classic_mceliece.rs b/src/views/classic_mceliece.rs
index 5c2ae80..74a42d1 100644
--- a/src/views/classic_mceliece.rs
+++ b/src/views/classic_mceliece.rs
@@ -141,7 +141,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -336,7 +339,7 @@ mod tests {
                 .fingerprint(Codec::Sha3256)
                 .unwrap();
             let fp_bytes: Vec<u8> = fp.into();
-            assert!(!fp_bytes.is_empty());
+            assert_ne!(fp_bytes, Vec::<u8>::new());
         }
     }
 
diff --git a/src/views/ed25519.rs b/src/views/ed25519.rs
index c5625ac..0ddcdd4 100644
--- a/src/views/ed25519.rs
+++ b/src/views/ed25519.rs
@@ -157,7 +157,10 @@ impl<'a> FingerprintView for View<'a> {
                 kd.key_bytes()?
             };
             // hash the key bytes using the given codec
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/ed25519_fndsa512.rs b/src/views/ed25519_fndsa512.rs
index b91389a..b722d9f 100644
--- a/src/views/ed25519_fndsa512.rs
+++ b/src/views/ed25519_fndsa512.rs
@@ -132,7 +132,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/ed25519_mayo2.rs b/src/views/ed25519_mayo2.rs
index bc19210..b2dc238 100644
--- a/src/views/ed25519_mayo2.rs
+++ b/src/views/ed25519_mayo2.rs
@@ -131,7 +131,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -350,7 +353,7 @@ mod tests {
         let fp1_bytes: Vec<u8> = fp1.into();
         let fp2_bytes: Vec<u8> = fp2.into();
         assert_eq!(fp1_bytes, fp2_bytes);
-        assert!(!fp1_bytes.is_empty());
+        assert_ne!(fp1_bytes, Vec::<u8>::new());
     }
 
     #[test]
diff --git a/src/views/ed25519_mldsa65.rs b/src/views/ed25519_mldsa65.rs
index c37ec54..e4e1cbe 100644
--- a/src/views/ed25519_mldsa65.rs
+++ b/src/views/ed25519_mldsa65.rs
@@ -138,7 +138,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/fn_dsa.rs b/src/views/fn_dsa.rs
index fa2f099..6208bcc 100644
--- a/src/views/fn_dsa.rs
+++ b/src/views/fn_dsa.rs
@@ -90,7 +90,10 @@ impl<'a> FingerprintView for View<'a> {
                 kd.key_bytes()?
             };
             // hash the key bytes using the given codec
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/frodokem.rs b/src/views/frodokem.rs
index 0414d22..7f57f4e 100644
--- a/src/views/frodokem.rs
+++ b/src/views/frodokem.rs
@@ -218,7 +218,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/lamport.rs b/src/views/lamport.rs
index 0b5541e..42f7276 100644
--- a/src/views/lamport.rs
+++ b/src/views/lamport.rs
@@ -549,7 +549,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/lamport_merkle.rs b/src/views/lamport_merkle.rs
index d2515b0..c85c5fb 100644
--- a/src/views/lamport_merkle.rs
+++ b/src/views/lamport_merkle.rs
@@ -636,7 +636,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/mayo.rs b/src/views/mayo.rs
index 2d9b45e..ec3516b 100644
--- a/src/views/mayo.rs
+++ b/src/views/mayo.rs
@@ -246,7 +246,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/ml_dsa.rs b/src/views/ml_dsa.rs
index 18ba475..2f9938e 100644
--- a/src/views/ml_dsa.rs
+++ b/src/views/ml_dsa.rs
@@ -231,7 +231,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/ml_kem.rs b/src/views/ml_kem.rs
index 4426058..71cfb7f 100644
--- a/src/views/ml_kem.rs
+++ b/src/views/ml_kem.rs
@@ -144,7 +144,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -367,7 +370,7 @@ mod tests {
                 .fingerprint(Codec::Sha3256)
                 .unwrap();
             let fp_bytes: Vec<u8> = fp.into();
-            assert!(!fp_bytes.is_empty());
+            assert_ne!(fp_bytes, Vec::<u8>::new());
         }
     }
 
diff --git a/src/views/nist_p.rs b/src/views/nist_p.rs
index ef37da9..b1d6831 100644
--- a/src/views/nist_p.rs
+++ b/src/views/nist_p.rs
@@ -178,7 +178,10 @@ impl<'a> FingerprintView for View<'a> {
                 let kd = dispatch_data_view(self.mk)?;
                 kd.key_bytes()?
             };
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/rsa.rs b/src/views/rsa.rs
index fd4bc0e..efe482b 100644
--- a/src/views/rsa.rs
+++ b/src/views/rsa.rs
@@ -237,7 +237,10 @@ impl<'a> FingerprintView for View<'a> {
                 let kd = dispatch_data_view(self.mk)?;
                 kd.key_bytes()?
             };
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/secp256k1.rs b/src/views/secp256k1.rs
index 6042440..76772a1 100644
--- a/src/views/secp256k1.rs
+++ b/src/views/secp256k1.rs
@@ -172,7 +172,10 @@ impl<'a> FingerprintView for View<'a> {
                 kd.key_bytes()?
             };
             // hash the key bytes using the given codec
-            Ok(mh::Builder::new_from_bytes(codec, bytes)?.try_build()?)
+            let mut b = mh::Builder::new(codec)?;
+            b.update(bytes);
+            b.output_len(32);
+            Ok(b.try_build()?)
         }
     }
 }
diff --git a/src/views/slh_dsa.rs b/src/views/slh_dsa.rs
index cf15d38..d3adf46 100644
--- a/src/views/slh_dsa.rs
+++ b/src/views/slh_dsa.rs
@@ -383,7 +383,10 @@ impl<'a> FingerprintView for View<'a> {
             return dispatch_fingerprint_view(&pk)?.fingerprint(codec);
         }
         let bytes = self.key_bytes()?;
-        Ok(mh::Builder::new_from_bytes(codec, bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/sntrup.rs b/src/views/sntrup.rs
index 94d8611..e650221 100644
--- a/src/views/sntrup.rs
+++ b/src/views/sntrup.rs
@@ -293,7 +293,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -474,7 +477,7 @@ mod tests {
                 .fingerprint(Codec::Sha3256)
                 .unwrap();
             let fp_bytes: Vec<u8> = fp.into();
-            assert!(!fp_bytes.is_empty());
+            assert_ne!(fp_bytes, Vec::<u8>::new());
         }
     }
 
diff --git a/src/views/threshold_meta.rs b/src/views/threshold_meta.rs
index 1fd0a68..6da635c 100644
--- a/src/views/threshold_meta.rs
+++ b/src/views/threshold_meta.rs
@@ -329,7 +329,7 @@ mod tests {
             let encoded = mode.encode_into();
             let (decoded, rest) = ThresholdDisclosure::try_decode_from(&encoded).unwrap();
             assert_eq!(mode, decoded);
-            assert!(rest.is_empty());
+            assert_eq!(rest.len(), 0);
         }
     }
 
diff --git a/src/views/x25519.rs b/src/views/x25519.rs
index 7d787b9..7096906 100644
--- a/src/views/x25519.rs
+++ b/src/views/x25519.rs
@@ -125,7 +125,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -328,7 +331,7 @@ mod tests {
             .fingerprint(Codec::Sha3256)
             .unwrap();
         let fp_bytes: Vec<u8> = fp.into();
-        assert!(!fp_bytes.is_empty());
+        assert_ne!(fp_bytes, Vec::<u8>::new());
     }
 
     #[test]
diff --git a/src/views/x25519_frodokem640.rs b/src/views/x25519_frodokem640.rs
index 94e473d..17adde1 100644
--- a/src/views/x25519_frodokem640.rs
+++ b/src/views/x25519_frodokem640.rs
@@ -209,7 +209,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/x25519_mceliece348864.rs b/src/views/x25519_mceliece348864.rs
index bc04beb..76854f4 100644
--- a/src/views/x25519_mceliece348864.rs
+++ b/src/views/x25519_mceliece348864.rs
@@ -146,7 +146,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/x25519_mlkem768.rs b/src/views/x25519_mlkem768.rs
index e8c8f96..0bdd668 100644
--- a/src/views/x25519_mlkem768.rs
+++ b/src/views/x25519_mlkem768.rs
@@ -141,7 +141,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -412,7 +415,7 @@ mod tests {
             .fingerprint(Codec::Sha3256)
             .unwrap();
         let fp_bytes: Vec<u8> = fp.into();
-        assert!(!fp_bytes.is_empty());
+        assert_ne!(fp_bytes, Vec::<u8>::new());
     }
 
     #[test]
diff --git a/src/views/x25519_sntrup761.rs b/src/views/x25519_sntrup761.rs
index a3378bb..fb0c626 100644
--- a/src/views/x25519_sntrup761.rs
+++ b/src/views/x25519_sntrup761.rs
@@ -156,7 +156,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -419,7 +422,7 @@ mod tests {
             .fingerprint(Codec::Sha3256)
             .unwrap();
         let fp_bytes: Vec<u8> = fp.into();
-        assert!(!fp_bytes.is_empty());
+        assert_ne!(fp_bytes, Vec::<u8>::new());
     }
 
     #[test]
diff --git a/src/views/xeddsa.rs b/src/views/xeddsa.rs
index 21f8efa..0843495 100644
--- a/src/views/xeddsa.rs
+++ b/src/views/xeddsa.rs
@@ -228,7 +228,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/src/views/xmss.rs b/src/views/xmss.rs
index 2d8e2f9..c4cc52c 100644
--- a/src/views/xmss.rs
+++ b/src/views/xmss.rs
@@ -318,7 +318,10 @@ impl<'a> FingerprintView for View<'a> {
         } else {
             self.key_bytes()?
         };
-        Ok(mh::Builder::new_from_bytes(codec, pub_bytes.as_slice())?.try_build()?)
+        let mut b = mh::Builder::new(codec)?;
+        b.update(pub_bytes.as_slice());
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
diff --git a/tests/custom_codec_tests.rs b/tests/custom_codec_tests.rs
index cbbf6bd..8b5a580 100644
--- a/tests/custom_codec_tests.rs
+++ b/tests/custom_codec_tests.rs
@@ -119,7 +119,10 @@ struct CustomFingerprint {
 
 impl FingerprintView for CustomFingerprint {
     fn fingerprint(&self, hash: Codec) -> Result<Multihash, Error> {
-        Ok(mh::Builder::new_from_bytes(hash, &self.key_bytes)?.try_build()?)
+        let mut b = mh::Builder::new(hash)?;
+        b.update(&self.key_bytes);
+        b.output_len(32);
+        Ok(b.try_build()?)
     }
 }
 
@@ -376,10 +379,10 @@ fn test_custom_key_factory_dispatch() {
         .with_local_codec(Codec::Identity, fingerprint_factory)
         .build()
         .unwrap();
-    let expected = mh::Builder::new_from_bytes(Codec::Blake2S256, b"custom-key-seed".as_slice())
-        .unwrap()
-        .try_build()
-        .unwrap();
+    let mut b = mh::Builder::new(Codec::Blake2S256).unwrap();
+    b.update(b"custom-key-seed".as_slice());
+    b.output_len(32);
+    let expected = b.try_build().unwrap();
     assert_eq!(fp.fingerprint(Codec::Blake2S256).unwrap(), expected);
 }