diff --git a/services/modules/ips4/manager.py b/services/modules/ips4/manager.py
index <HASH>..<HASH> 100644
--- a/services/modules/ips4/manager.py
+++ b/services/modules/ips4/manager.py
@@ -48,7 +48,7 @@ class Ips4Manager:
 
     @staticmethod
     def _gen_pwhash(password):
-        return bcrypt.encrypt(password.encode('utf-8'), rounds=13)
+        return bcrypt.using(ident='2a').encrypt(password.encode('utf-8'), rounds=13)
 
     @staticmethod
     def _get_salt(pw_hash):
Force bcrypt version 2a

Insecure, but 2b is not supported by IPS4 according to user reports. This manager needs to be changed to use the IPS4 API at some point anyway, so really a stop gap measure.