diff --git a/CHANGELOG b/CHANGELOG
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,8 @@
 # Changelog
 
+- 0.3.2 (2026-01-10)
+  * Bumps some dependency lower bounds.
+
 - 0.3.1 (2025-12-28)
   * Bumps some dependency lower bounds.
   * Adds an 'llvm' build flag and tests with GHC 9.10.3.
diff --git a/lib/Crypto/KDF/BIP39.hs b/lib/Crypto/KDF/BIP39.hs
--- a/lib/Crypto/KDF/BIP39.hs
+++ b/lib/Crypto/KDF/BIP39.hs
@@ -63,6 +63,11 @@
 fi = fromIntegral
 {-# INLINE fi #-}
 
+hmac_sha512 :: BS.ByteString -> BS.ByteString -> BS.ByteString
+hmac_sha512 k b = case SHA512.hmac k b of
+  SHA512.MAC mac -> mac
+{-# INLINE hmac_sha512 #-}
+
 -- | A BIP39 wordlist.
 newtype Wordlist = Wordlist (PA.Array T.Text)
 
@@ -166,7 +171,7 @@
   guard (_valid wlist mnem)
   let salt = TE.encodeUtf8 ("mnemonic" <> ICU.nfkd pass)
       norm = TE.encodeUtf8 (ICU.nfkd mnem)
-  PBKDF.derive SHA512.hmac norm salt 2048 64
+  PBKDF.derive hmac_sha512 norm salt 2048 64
 {-# INLINE _seed #-}
 
 -- | Derive a master seed from a provided mnemonic and passphrase.
@@ -186,7 +191,7 @@
   guard (length (T.words mnem) `elem` [12, 15, 18, 21, 24])
   let salt = TE.encodeUtf8 ("mnemonic" <> ICU.nfkd pass)
       norm = TE.encodeUtf8 (ICU.nfkd mnem)
-  PBKDF.derive SHA512.hmac norm salt 2048 64
+  PBKDF.derive hmac_sha512 norm salt 2048 64
 
 -- | Validate a mnemonic against the default English wordlist.
 --
diff --git a/ppad-bip39.cabal b/ppad-bip39.cabal
--- a/ppad-bip39.cabal
+++ b/ppad-bip39.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               ppad-bip39
-version:            0.3.1
+version:            0.3.2
 synopsis:           BIP39 mnemonic codes.
 license:            MIT
 license-file:       LICENSE
@@ -47,9 +47,9 @@
   build-depends:
       base >= 4.9 && < 5
     , bytestring >= 0.9 && < 0.13
-    , ppad-pbkdf >= 0.2.1 && < 0.3
-    , ppad-sha256 >= 0.2.4 && < 0.3
-    , ppad-sha512 >= 0.1.4 && < 0.2
+    , ppad-pbkdf >= 0.2.2 && < 0.3
+    , ppad-sha256 >= 0.3 && < 0.4
+    , ppad-sha512 >= 0.2 && < 0.3
     , primitive >= 0.8 && < 0.10
     , text >= 2.1 && < 2.2
     , text-icu >= 0.8 && < 0.9