diff --git a/impl/rust/pqf-reader/Cargo.toml b/impl/rust/pqf-reader/Cargo.toml
index 5b6ac1a..c58fe62 100644
--- a/impl/rust/pqf-reader/Cargo.toml
+++ b/impl/rust/pqf-reader/Cargo.toml
@@ -26,7 +26,7 @@ ml-dsa = "0.0.4"
 # AEAD + hashing + KDF
 aes-gcm = "0.10"
 sha2 = "0.10"
-hkdf = "0.12"
+hkdf = "0.13"
 
 # Encoding utilities
 base64 = "0.22"