diff --git a/src/osekit/public/project.py b/src/osekit/public/project.py
index 23771a1f..eb353276 100644
--- a/src/osekit/public/project.py
+++ b/src/osekit/public/project.py
@@ -733,27 +733,28 @@ def rename_transform_with_outputs(
             raise ValueError(msg)
 
         keys_to_rename = {}
-        for output_dataset in self.outputs.values():
-            if output_dataset["transform"] == transform_name:
-                output_dataset["transform"] = new_transform_name
-                ds = output_dataset["dataset"]
-                old_name, new_name = (
-                    ds.name,
-                    new_transform_name + (f"_{ds.suffix}" if ds.suffix else ""),
-                )
-                ds.base_name = new_transform_name
-                old_folder = ds.folder
-                new_folder = ds.folder.parent / new_name
-                keys_to_rename[old_name] = new_name
-
-                ds.move_files(new_folder)
-                move_tree(
-                    old_folder,
-                    new_folder,
-                    excluded_paths=old_folder.glob("*.json"),
-                )  # Moves exported files
-                shutil.rmtree(str(old_folder))
-                ds.write_json(ds.folder)
+        for output_name, output_dataset in self.outputs.items():
+            if output_dataset["transform"] != transform_name:
+                continue
+            output_dataset["transform"] = new_transform_name
+            ds = self.deserialize_output(output_name=output_name)
+            old_name, new_name = (
+                ds.name,
+                new_transform_name + (f"_{ds.suffix}" if ds.suffix else ""),
+            )
+            ds.base_name = new_transform_name
+            old_folder = ds.folder
+            new_folder = ds.folder.parent / new_name
+            keys_to_rename[old_name] = new_name
+
+            ds.move_files(new_folder)
+            move_tree(
+                old_folder,
+                new_folder,
+                excluded_paths=old_folder.glob("*.json"),
+            )  # Moves exported files
+            shutil.rmtree(str(old_folder))
+            ds.write_json(ds.folder)
 
         for old_name, new_name in keys_to_rename.items():
             self.outputs[new_name] = self.outputs.pop(old_name)
diff --git a/tests/test_public_api.py b/tests/test_public_api.py
index 15e474b0..ef65a935 100644
--- a/tests/test_public_api.py
+++ b/tests/test_public_api.py
@@ -1543,6 +1543,13 @@ def test_rename_transform(
             new_transform_name=target_name,
         )
 
+    # DESERIALIZED PROJECT SHOULD DESERIALIZE TRANSFORMS ON RENAME CALL
+    project = Project.from_json(project.folder / "project.json")
+    project.rename_transform_with_outputs(
+        transform_name=names[-1],
+        new_transform_name="cool",
+    )
+
 
 def test_spectro_transform_with_existing_ads(
     tmp_path: Path,