diff --git a/lib/charms/mysql/v0/mysql.py b/lib/charms/mysql/v0/mysql.py
index 507e19c82..ddbb2ea99 100644
--- a/lib/charms/mysql/v0/mysql.py
+++ b/lib/charms/mysql/v0/mysql.py
@@ -133,7 +133,7 @@ def wait_until_mysql_connection(self) -> None:
 # Increment this major API version when introducing breaking changes
 LIBAPI = 0
 
-LIBPATCH = 83
+LIBPATCH = 84
 
 UNIT_TEARDOWN_LOCKNAME = "unit-teardown"
 UNIT_ADD_LOCKNAME = "unit-add"
@@ -999,6 +999,7 @@ def render_mysqld_configuration(  # noqa: C901
             "log_error": f"{snap_common}/var/log/mysql/error.log",
             "general_log": "OFF",
             "general_log_file": f"{snap_common}/var/log/mysql/general.log",
+            "loose-group_replication_paxos_single_leader": "ON",
             "slow_query_log_file": f"{snap_common}/var/log/mysql/slow.log",
             "binlog_expire_logs_seconds": f"{binlog_retention_seconds}",
             "loose-audit_log_policy": audit_log_policy.upper(),
diff --git a/tests/unit/test_mysql.py b/tests/unit/test_mysql.py
index f7aef41be..93fb6ff38 100644
--- a/tests/unit/test_mysql.py
+++ b/tests/unit/test_mysql.py
@@ -2063,6 +2063,7 @@ def test_render_mysqld_configuration(self, _get_available_memory):
             "loose-audit_log_policy": "LOGINS",
             "loose-audit_log_strategy": "ASYNCHRONOUS",
             "loose-audit_log_file": "/var/log/mysql/audit.log",
+            "loose-group_replication_paxos_single_leader": "ON",
             "innodb_buffer_pool_chunk_size": "2902458368",
         }
         self.maxDiff = None
diff --git a/tests/unit/test_mysqlsh_helpers.py b/tests/unit/test_mysqlsh_helpers.py
index 427f125c8..7bbc67f1b 100644
--- a/tests/unit/test_mysqlsh_helpers.py
+++ b/tests/unit/test_mysqlsh_helpers.py
@@ -327,6 +327,7 @@ def test_write_mysqld_config(
             "log_error = /var/snap/charmed-mysql/common/var/log/mysql/error.log",
             "general_log = OFF",
             "general_log_file = /var/snap/charmed-mysql/common/var/log/mysql/general.log",
+            "loose-group_replication_paxos_single_leader = ON",
             "slow_query_log_file = /var/snap/charmed-mysql/common/var/log/mysql/slow.log",
             "binlog_expire_logs_seconds = 604800",
             "loose-audit_log_policy = LOGINS",
@@ -362,6 +363,7 @@ def test_write_mysqld_config(
             "log_error = /var/snap/charmed-mysql/common/var/log/mysql/error.log",
             "general_log = OFF",
             "general_log_file = /var/snap/charmed-mysql/common/var/log/mysql/general.log",
+            "loose-group_replication_paxos_single_leader = ON",
             "slow_query_log_file = /var/snap/charmed-mysql/common/var/log/mysql/slow.log",
             "binlog_expire_logs_seconds = 604800",
             "loose-audit_log_policy = LOGINS",