diff --git a/CHANGELOG.md b/CHANGELOG.md
index bfc25e4..ed4cbf4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@ Given a version number MAJOR.MINOR.PATCH, increment:
 
 
 ## [Unreleased]
+### Added
+- holder_id query parameter to MerchantPurchase and MerchantSession
+- holder_id and soft_descriptor attributes to MerchantSession and MerchantPurchase
 
 ## [2.32.1] - 2026-02-24
 ### Added
diff --git a/starkbank/merchantpurchase/__merchantpurchase.py b/starkbank/merchantpurchase/__merchantpurchase.py
index 25965a7..30f15e7 100644
--- a/starkbank/merchantpurchase/__merchantpurchase.py
+++ b/starkbank/merchantpurchase/__merchantpurchase.py
@@ -9,9 +9,9 @@ class MerchantPurchase(Resource):
     """
 
     def __init__(self, amount, card_id, funding_type, installment_count, id=None, card_expiration=None,
-                 card_number=None, card_security_code=None,holder_name=None, holder_email=None, holder_phone=None,
+                 card_number=None, card_security_code=None,holder_name=None, holder_email=None, holder_phone=None, holder_id=None,
                  billing_country_code=None, billing_city=None,billing_state_code=None, billing_street_line_1=None,
-                 billing_street_line_2=None, billing_zip_code=None, metadata=None, card_ending=None,
+                 billing_street_line_2=None, billing_zip_code=None, metadata=None, card_ending=None, soft_descriptor=None,
                  challenge_mode=None, challenge_url=None, created=None, currency_code=None, end_to_end_id=None,
                  fee=None, network=None, source=None, status=None, tags=None, updated=None):
         Resource.__init__(self, id=id)
@@ -24,6 +24,7 @@ def __init__(self, amount, card_id, funding_type, installment_count, id=None, ca
         self.holder_name = holder_name
         self.holder_email = holder_email
         self.holder_phone = holder_phone
+        self.holder_id = holder_id
         self.funding_type = funding_type
         self.billing_country_code = billing_country_code
         self.billing_city = billing_city
@@ -34,6 +35,7 @@ def __init__(self, amount, card_id, funding_type, installment_count, id=None, ca
         self.metadata = metadata
         self.card_ending = card_ending
         self.card_id = card_id
+        self.soft_descriptor = soft_descriptor
         self.challenge_mode = challenge_mode
         self.challenge_url = challenge_url
         self.currency_code = currency_code
@@ -58,7 +60,7 @@ def get(id, user=None):
     return rest.get_id(resource=_resource, id=id, user=user)
 
 
-def query(limit=None, after=None, before=None, status=None, tags=None, ids=None, user=None):
+def query(limit=None, after=None, before=None, status=None, tags=None, ids=None, holder_id=None, user=None):
     return rest.get_stream(
         resource=_resource,
         limit=limit,
@@ -67,11 +69,12 @@ def query(limit=None, after=None, before=None, status=None, tags=None, ids=None,
         status=status,
         tags=tags,
         ids=ids,
+        holder_id=holder_id,
         user=user,
     )
 
 
-def page(cursor=None, limit=None, after=None, before=None, status=None, tags=None, ids=None, user=None):
+def page(cursor=None, limit=None, after=None, before=None, status=None, tags=None, ids=None, holder_id=None, user=None):
     return rest.get_page(
         resource=_resource,
         cursor=cursor,
@@ -81,6 +84,7 @@ def page(cursor=None, limit=None, after=None, before=None, status=None, tags=Non
         status=status,
         tags=tags,
         ids=ids,
+        holder_id=holder_id,
         user=user,
     )
 
diff --git a/starkbank/merchantsession/__merchantsession.py b/starkbank/merchantsession/__merchantsession.py
index 3ed4802..df0b7ba 100644
--- a/starkbank/merchantsession/__merchantsession.py
+++ b/starkbank/merchantsession/__merchantsession.py
@@ -13,7 +13,7 @@ class MerchantSession(Resource):
     """
 
     def __init__(self, allowed_funding_types, allowed_installments, expiration, id=None, allowed_ips=None,
-                 challenge_mode=None, created=None, status=None, tags=None, updated=None, uuid=None):
+                 challenge_mode=None, created=None, status=None, tags=None, updated=None, uuid=None, holder_id=None, soft_descriptor=None):
         Resource.__init__(self, id=id)
 
         self.allowed_funding_types = allowed_funding_types
@@ -26,7 +26,8 @@ def __init__(self, allowed_funding_types, allowed_installments, expiration, id=N
         self.created = check_datetime(created)
         self.updated = check_datetime(updated)
         self.uuid = uuid
-
+        self.holder_id = holder_id
+        self.soft_descriptor = soft_descriptor
 
 _resource = {"class": MerchantSession, "name": "MerchantSession"}
 
@@ -51,7 +52,7 @@ def get(id, user=None):
     return rest.get_id(resource=_resource, id=id, user=user)
 
 
-def query(limit=None, status=None, tags=None, ids=None, after=None, before=None, user=None):
+def query(limit=None, status=None, tags=None, ids=None, after=None, before=None, holder_id=None, user=None):
     return rest.get_stream(
         resource=_resource,
         limit=limit,
@@ -60,11 +61,12 @@ def query(limit=None, status=None, tags=None, ids=None, after=None, before=None,
         status=status,
         tags=tags,
         ids=ids,
+        holder_id=holder_id,
         user=user,
     )
 
 
-def page(cursor=None, limit=None, status=None, tags=None, ids=None, after=None, before=None, user=None):
+def page(cursor=None, limit=None, status=None, tags=None, ids=None, after=None, before=None, holder_id=None, user=None):
     return rest.get_page(
         resource=_resource,
         cursor=cursor,
@@ -74,6 +76,7 @@ def page(cursor=None, limit=None, status=None, tags=None, ids=None, after=None,
         status=status,
         tags=tags,
         ids=ids,
+        holder_id=holder_id,
         user=user,
     )
 
diff --git a/starkbank/merchantsession/__purchase.py b/starkbank/merchantsession/__purchase.py
index adabd13..c649007 100644
--- a/starkbank/merchantsession/__purchase.py
+++ b/starkbank/merchantsession/__purchase.py
@@ -8,11 +8,11 @@ class Purchase(Resource):
     """
 
     def __init__(self, amount, card_expiration, card_number, card_security_code, holder_name, funding_type, id=None,
-                 holder_email=None, holder_phone=None, installment_count=None, billing_country_code=None,
+                 holder_email=None, holder_phone=None, holder_id=None, installment_count=None, billing_country_code=None,
                  billing_city=None, billing_state_code=None, billing_street_line_1=None, billing_street_line_2=None,
                  billing_zip_code=None, metadata=None, card_ending=None, card_id=None, challenge_mode=None,
                  challenge_url=None, created=None, currency_code=None, end_to_end_id=None, fee=None, network=None,
-                 source=None, status=None, tags=None, updated=None):
+                 soft_descriptor=None, source=None, status=None, tags=None, updated=None):
         Resource.__init__(self, id=id)
 
         self.amount = amount
@@ -23,6 +23,7 @@ def __init__(self, amount, card_expiration, card_number, card_security_code, hol
         self.funding_type = funding_type
         self.holder_email = holder_email
         self.holder_phone = holder_phone
+        self.holder_id = holder_id
         self.installment_count = installment_count
         self.billing_country_code = billing_country_code
         self.billing_city = billing_city
@@ -39,6 +40,7 @@ def __init__(self, amount, card_expiration, card_number, card_security_code, hol
         self.end_to_end_id = end_to_end_id
         self.fee = fee
         self.network = network
+        self.soft_descriptor = soft_descriptor
         self.source = source
         self.status = status
         self.tags = tags
diff --git a/tests/utils/merchantPurchase.py b/tests/utils/merchantPurchase.py
index 341bb70..68e8913 100644
--- a/tests/utils/merchantPurchase.py
+++ b/tests/utils/merchantPurchase.py
@@ -47,6 +47,7 @@ def json_to_merchant_purchase(json_data):
         holder_name=json_data.get("holderName"),
         holder_email=json_data.get("holderEmail"),
         holder_phone=json_data.get("holderPhone"),
+        holder_id=json_data.get("holderId"),
         funding_type=json_data.get("fundingType"),
         billing_country_code=json_data.get("billingCountryCode"),
         billing_city=json_data.get("billingCity"),
@@ -56,6 +57,7 @@ def json_to_merchant_purchase(json_data):
         billing_zip_code=json_data.get("billingZipCode"),
         metadata=json_data.get("metadata"),
         card_id=json_data.get("cardId"),
+        soft_descriptor=json_data.get("softDescriptor"),
     )
 
 
@@ -68,6 +70,7 @@ def json_to_merchant_purchase(json_data):
     "holderName": "Holder Name",
     "holderEmail": "holdeName@email.com",
     "holderPhone": "11111111111",
+    "holderId": "565656555656", 
     "fundingType": "credit",
     "billingCountryCode": "BRA",
     "billingCity": "São Paulo",
@@ -102,6 +105,8 @@ def generate_example_merchant_purchase_json(card_id):
         "billingZipCode": "11111-111",
         "holderEmail": "holdeName@email.com",
         "holderPhone": "11111111111",
+        "holderId": "565656555656",
+        "softDescriptor": "Soft Descriptor",
         "metadata": {
             "userAgent": "userAgent",
             "userIp": "255.255.255.255",
diff --git a/tests/utils/merchantSession.py b/tests/utils/merchantSession.py
index 2e756aa..0170763 100644
--- a/tests/utils/merchantSession.py
+++ b/tests/utils/merchantSession.py
@@ -30,6 +30,8 @@ def json_to_merchant_session(json_data):
         challenge_mode=json_data.get("challengeMode"),
         expiration=json_data.get("expiration"),
         tags=json_data.get("tags"),
+        holder_id=json_data.get("holderId"),
+        soft_descriptor=json_data.get("softDescriptor"),
     )
 
 
@@ -37,20 +39,22 @@ def generate_example_merchant_session_json(challengeMode):
     merchant_session_json = {
         "allowedFundingTypes": ["debit", "credit"],
         "allowedInstallments": [
-            {"totalAmount": 0, "count": 1},
-            {"totalAmount": 120, "count": 2},
-            {"totalAmount": 180, "count": 12},
+            {"totalAmount": 500, "count": 1},
+            {"totalAmount": 1000, "count": 2},
+            {"totalAmount": 6000, "count": 12},
         ],
         "expiration": 3600,
         "challengeMode": challengeMode,
         "tags": ["yourTags"],
+        "holderId": "5656565665",
+        "softDescriptor": "softDescriptor",
     }
     return deepcopy(json_to_merchant_session(merchant_session_json))
 
 
 def generate_example_merchant_session_purchase_challenge_mode_disabled_json():
     merchant_session_purchase_json = {
-        "amount": 180,
+        "amount": 6000,
         "installmentCount": 12,
         "cardExpiration": "2035-01",
         "cardNumber": "5277696455399733",
@@ -63,7 +67,7 @@ def generate_example_merchant_session_purchase_challenge_mode_disabled_json():
 
 def generate_example_merchant_session_purchase_challenge_mode_enabled_json():
     merchant_session_purchase_json = {
-        "amount": 180,
+        "amount": 6000,
         "installmentCount": 12,
         "cardExpiration": "2035-01",
         "cardNumber": "5277696455399733",