diff --git a/rust_crypto/Cargo.toml b/rust_crypto/Cargo.toml
index 4f444a4..aa6389f 100644
--- a/rust_crypto/Cargo.toml
+++ b/rust_crypto/Cargo.toml
@@ -22,7 +22,7 @@ pyo3 = { version = "0.28.2", features = ["extension-module"], optional = true }
 # Core cryptography - all audited, production-ready crates
 argon2 = "0.5"   # Argon2id KDF (password hashing)
 aes-gcm = "0.10" # AES-256-GCM AEAD encryption
-aes = "0.8"      # AES block cipher (for CTR mode)
+aes = "0.9"      # AES block cipher (for CTR mode)
 ctr = "0.9"      # CTR mode for streaming encryption
 cipher = "0.5"   # Cipher traits
 hkdf = "0.13"    # HKDF key derivation (RFC 5869)