diff --git a/python/passgeny/passgeny.py b/python/passgeny/passgeny.py
index 0e4a963..1ae0299 100644
--- a/python/passgeny/passgeny.py
+++ b/python/passgeny/passgeny.py
@@ -26,7 +26,7 @@ PASSGENY_ARGON2_TIME_COST = 6
 # Number of parallel threads
 PASSGENY_ARGON2_PARALLEL = 4
 # Hash length - 512 bits by default
-PASSGENY_ARGON2_HASH_LEN = 64
+PASSGENY_ARGON2_HASH_LEN = 128
 
 class PassgenyInvalidPattern(Exception):
     pass