diff --git a/src/speckleifc/main.py b/src/speckleifc/main.py
index 00c59f8..bd010a3 100644
--- a/src/speckleifc/main.py
+++ b/src/speckleifc/main.py
@@ -23,6 +23,7 @@ from specklepy.transports.server import ServerTransport
 def open_and_convert_file(
     file_path: str,
     project: Project,
+    version_message: str,
     model_ingestion_id: str,
     client: SpeckleClient,
 ) -> Version:
@@ -86,7 +87,7 @@ def open_and_convert_file(
                 project_id=project.id,
                 ingestion_id=model_ingestion_id,
                 root_object_id=root_id,
-                # version_message=version_message,
+                version_message=version_message,
             )
         )
 
diff --git a/src/specklepy/core/api/inputs/model_ingestion_inputs.py b/src/specklepy/core/api/inputs/model_ingestion_inputs.py
index 76d6d04..852456f 100644
--- a/src/specklepy/core/api/inputs/model_ingestion_inputs.py
+++ b/src/specklepy/core/api/inputs/model_ingestion_inputs.py
@@ -40,6 +40,7 @@ class ModelIngestionSuccessInput(GraphQLBaseModel):
     ingestion_id: str
     project_id: str
     root_object_id: str
+    version_message: str | None
 
 
 class ModelIngestionFailedInput(GraphQLBaseModel):
diff --git a/tests/integration/client/current/test_model_ingestion_resource.py b/tests/integration/client/current/test_model_ingestion_resource.py
index dd06bf8..551ae52 100644
--- a/tests/integration/client/current/test_model_ingestion_resource.py
+++ b/tests/integration/client/current/test_model_ingestion_resource.py
@@ -207,7 +207,7 @@ class TestIngestionResource:
             ingestion_id=ingestion.id,
             root_object_id=object_id,
             project_id=project.id,
-            # version_message=None,
+            version_message=None,
         )
 
         res = client.model_ingestion.complete(input)
@@ -271,7 +271,7 @@ class TestIngestionResource:
             ingestion_id=ingestion.id,
             root_object_id="asdfasdfasdfasfd",
             project_id=project.id,
-            # version_message=None,
+            version_message=None,
         )
         with pytest.raises(GraphQLException):
             _ = client.model_ingestion.complete(input)