diff --git a/src/DIRAC/FrameworkSystem/DB/AuthDB.py b/src/DIRAC/FrameworkSystem/DB/AuthDB.py
index 0ea16d4fc75..9a44e9f293e 100644
--- a/src/DIRAC/FrameworkSystem/DB/AuthDB.py
+++ b/src/DIRAC/FrameworkSystem/DB/AuthDB.py
@@ -154,7 +154,7 @@ def generateRSAKeys(self):
 
         :return: S_OK/S_ERROR
         """
-        key = JsonWebKey.generate_key("RSA", 1024, is_private=True)
+        key = JsonWebKey.generate_key("RSA", 2048, is_private=True)
         # as_dict has no arguments for authlib < 1.0.0
         # for authlib >= 1.0.0
         keyDict = dict(