diff --git a/src/axolotl/cli/args.py b/src/axolotl/cli/args.py
index 0618e07f1..d451b45a6 100644
--- a/src/axolotl/cli/args.py
+++ b/src/axolotl/cli/args.py
@@ -13,6 +13,12 @@ class PreprocessCliArgs:
     debug_num_examples: int = field(default=1)
     prompter: Optional[str] = field(default=None)
     download: Optional[bool] = field(default=True)
+    iterable: Optional[bool] = field(
+        default=None,
+        metadata={
+            "help": "Use IterableDataset for streaming processing of large datasets"
+        },
+    )
 
 
 @dataclass