diff --git a/docs/schema.md b/docs/schema.md
index f453728..c732a37 100644
--- a/docs/schema.md
+++ b/docs/schema.md
@@ -180,6 +180,28 @@ public_key: STRING
 slots: INTEGER (REPEATED)
 ```
 
+### endorsement_with_slot_operations
+
+```
+level: INTEGER
+timestamp: TIMESTAMP
+block_hash: STRING
+branch: STRING
+signature: STRING
+operation_hash: STRING
+operation_group_index: INTEGER
+operation_index: INTEGER
+content_index: INTEGER
+internal_operation_index: INTEGER
+delegate: STRING
+endorsement_branch: STRING
+endorsement_signature: STRING
+operations_kind: STRING
+operations_level: INTEGER
+slot``: INTEGER
+slots: INTEGER (REPEATED)
+```
+
 ### origination_operations
 
 ```
diff --git a/tezosetl/enums/operation_kinds.py b/tezosetl/enums/operation_kinds.py
index 6801ee5..50d8904 100644
--- a/tezosetl/enums/operation_kinds.py
+++ b/tezosetl/enums/operation_kinds.py
@@ -5,6 +5,7 @@ class OperationKind:
     double_baking_evidence = 'double_baking_evidence'
     double_endorsement_evidence = 'double_endorsement_evidence'
     endorsement = 'endorsement'
+    endorsement_with_slot = 'endorsement_with_slot'
     origination = 'origination'
     proposals = 'proposals'
     reveal = 'reveal'
@@ -18,6 +19,7 @@ class OperationKind:
         double_baking_evidence,
         double_endorsement_evidence,
         endorsement,
+        endorsement_with_slot,
         origination,
         proposals,
         reveal,
diff --git a/tezosetl/mappers/operation_mapper.py b/tezosetl/mappers/operation_mapper.py
index 7e0983e..0d199a9 100644
--- a/tezosetl/mappers/operation_mapper.py
+++ b/tezosetl/mappers/operation_mapper.py
@@ -71,6 +71,8 @@ def map_base_operation(block, operation_group_index, operation_index, content_in
 def map_operation(operation_kind, content, base_operation):
     if operation_kind == OperationKind.endorsement:
         return map_endorsement(content, base_operation)
+    elif operation_kind == OperationKind.endorsement_with_slot:
+        return map_endorsement_with_slot(content, base_operation)
     elif operation_kind == OperationKind.transaction:
         return map_transaction(content, base_operation)
     elif operation_kind == OperationKind.delegation:
@@ -104,6 +106,21 @@ def map_endorsement(content, base_operation):
     }}
 
 
+def map_endorsement_with_slot(content, base_operation):
+    metadata = content.get('metadata', EMPTY_OBJECT)
+    endorsement = content.get('endorsement', EMPTY_OBJECT)
+    operations = endorsement.get('operations', EMPTY_OBJECT)
+    return {**base_operation, **{
+        'delegate': metadata.get('delegate'),
+        'endorsement_branch': endorsement.get('branch'),
+        'endorsement_signature': endorsement.get('signature'),
+        'operations_kind': operations.get('kind'),
+        'operations_level': operations.get('level'),
+        'slot': content.get('slot'),
+        'slots': metadata.get('slots')
+    }}
+
+
 def map_transaction(content, base_operation):
     operation_result = get_operation_result(content)