diff --git a/ethkeygen.py b/ethkeygen.py
index d46ceec..a9a2c52 100644
--- a/ethkeygen.py
+++ b/ethkeygen.py
@@ -28,12 +28,12 @@ def generate(_msg, _privkey):
 # ecrecover in Solidity expects v as a native uint8, but r and s as left-padded bytes32
 # Remix / web3.js expect r and s to be encoded to hex. This method does the pad & hex:
 def to_32byte_hex(val):
-    return Web3.toHex(Web3.toBytes(val).rjust(32, b'\0'))
+    return Web3.to_hex(Web3.to_bytes(val).rjust(32, b'\0'))
 
 # Recover for tx
 def gen_vrs(signed_message):
     ec_recover_args = (msghash, v, r, s) = (
-        Web3.toHex(signed_message.messageHash),
+        Web3.to_hex(signed_message.messageHash),
         signed_message.v,
         to_32byte_hex(signed_message.r),
         to_32byte_hex(signed_message.s),)
diff --git a/requirements.txt b/requirements.txt
index 54eeb47..2e1bec3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-web3==5.29.1
-eth-account==0.5.7
+web3==6.8.0
+eth-account==0.9.0