diff --git a/lightning-address.py b/lightning-address.py
index 8c0d7fa..cfee0a6 100755
--- a/lightning-address.py
+++ b/lightning-address.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python3
+#!/usr/bin/env python3
 from binascii import hexlify, unhexlify
 from lnaddr import lnencode, lndecode, LnAddr
 
diff --git a/lnaddr.py b/lnaddr.py
index 2d88a87..d94b04f 100755
--- a/lnaddr.py
+++ b/lnaddr.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python3
+#!/usr/bin/env python3
 from bech32 import bech32_encode, bech32_decode, CHARSET
 from binascii import hexlify, unhexlify
 from bitstring import BitArray
@@ -104,10 +104,10 @@ def parse_fallback(fallback, currency):
         wver = fallback[0:5].uint
         if wver == 17:
             addr=base58.b58encode_check(bytes([base58_prefix_map[currency][0]])
-                                        + fallback[5:].tobytes())
+                                        + fallback[5:].tobytes()).decode('ascii')
         elif wver == 18:
             addr=base58.b58encode_check(bytes([base58_prefix_map[currency][1]])
-                                        + fallback[5:].tobytes())
+                                        + fallback[5:].tobytes()).decode('ascii')
         elif wver <= 16:
             addr=bech32_encode(currency, bitarray_to_u5(fallback))
         else:
@@ -345,7 +345,7 @@ def lndecode(a, verbose=False):
             if data_length != 53:
                 addr.unknown_tags.append((tag, tagdata))
                 continue
-            addr.pubkey = secp256k1.PublicKey(flags=secp256k1.ALL_FLAGS)
+            addr.pubkey = secp256k1.PublicKey()
             addr.pubkey.deserialize(trim_to_bytes(tagdata))
         else:
             addr.unknown_tags.append((tag, tagdata))
@@ -372,7 +372,7 @@ def lndecode(a, verbose=False):
         if not addr.pubkey.ecdsa_verify(bytearray([ord(c) for c in hrp]) + data.tobytes(), addr.signature):
             raise ValueError('Invalid signature')
     else: # Recover pubkey from signature.
-        addr.pubkey = secp256k1.PublicKey(flags=secp256k1.ALL_FLAGS)
+        addr.pubkey = secp256k1.PublicKey()
         addr.signature = addr.pubkey.ecdsa_recoverable_deserialize(
             sigdecoded[0:64], sigdecoded[64])
         addr.pubkey.public_key = addr.pubkey.ecdsa_recover(
diff --git a/requirements.txt b/requirements.txt
index 567af8a..9711b25 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
-base58==0.2.5
-secp256k1==0.13.2
-bitstring==3.1.5
+base58==2.1.1
+secp256k1==0.14.0
+--no-binary=secp256k1
+bitstring==3.1.9
diff --git a/test_lnpay.py b/test_lnpay.py
index 985a1c9..b73e705 100755
--- a/test_lnpay.py
+++ b/test_lnpay.py
@@ -1,4 +1,4 @@
-#! /usr/bin/python3
+#!/usr/bin/env python3
 
 from hashlib import sha256
 from lnaddr import shorten_amount, unshorten_amount, LnAddr, lnencode, lndecode, u5_to_bitarray, bitarray_to_u5