diff --git a/speckle/api/models.py b/speckle/api/models.py
index 3cc91ba..43d0fcf 100644
--- a/speckle/api/models.py
+++ b/speckle/api/models.py
@@ -25,7 +25,10 @@ class Commit(BaseModel):
     authorId: Optional[str]
     authorAvatar: Optional[str]
     createdAt: Optional[str]
+    sourceApplication: Optional[str]
     referencedObject: Optional[str]
+    totalChildrenCount: Optional[int]
+    parents: Optional[List[str]]
 
     def __repr__(self) -> str:
         return f"Commit( id: {self.id}, message: {self.message}, referencedObject: {self.referencedObject}, authorName: {self.authorName}, createdAt: {self.createdAt} )"
diff --git a/speckle/api/resources/commit.py b/speckle/api/resources/commit.py
index 154c181..768f88b 100644
--- a/speckle/api/resources/commit.py
+++ b/speckle/api/resources/commit.py
@@ -37,9 +37,13 @@ class Resource(ResourceBase):
                         id
                         referencedObject
                         message
-                        authorName
                         authorId
+                        authorName
+                        authorAvatar
                         createdAt
+                        sourceApplication
+                        totalChildrenCount
+                        parents
                     }
                 }
             }
@@ -70,10 +74,15 @@ class Resource(ResourceBase):
                         items {
                             id
                             message
+                            referencedObject
                             authorName
                             authorId
+                            authorName
+                            authorAvatar
                             createdAt
-                            referencedObject
+                            sourceApplication
+                            totalChildrenCount
+                            parents
                         }
                     }
                 }
@@ -92,6 +101,8 @@ class Resource(ResourceBase):
         object_id: str,
         branch_name: str = "main",
         message: str = "",
+        source_application: str = "pyspeckle",
+        parents: List[str] = None,
     ) -> str:
         """
         Creates a commit on a branch
@@ -101,6 +112,8 @@ class Resource(ResourceBase):
             object_id {str} -- the hash of your commit object
             branch_name {str} -- the name of the branch to commit to (defaults to "main")
             message {str} -- optional: a message to give more information about the commit
+            source_application{str} -- optional: the application from which the commit was created (defaults ty "pyspeckle")
+            parents {List[str]} -- optional: the id of the parent commits
 
         Returns:
             str -- the id of the created commit
@@ -116,8 +129,11 @@ class Resource(ResourceBase):
                 "branchName": branch_name,
                 "objectId": object_id,
                 "message": message,
+                "sourceApplication": source_application,
             }
         }
+        if parents:
+            params["commit"]["parents"] = parents
 
         return self.make_request(
             query=query, params=params, return_type="commitCreate", parse_response=False