diff --git a/lora_diffusion/dataset.py b/lora_diffusion/dataset.py
index a8e81b0..eed4403 100644
--- a/lora_diffusion/dataset.py
+++ b/lora_diffusion/dataset.py
@@ -139,9 +139,11 @@ def __init__(
             self.captions = open(f"{instance_data_root}/caption.txt").readlines()
 
         else:
-            possibily_src_images = glob.glob(
-                str(instance_data_root) + "/*.jpg"
-            ) + glob.glob(str(instance_data_root) + "/*.png")
+            possibily_src_images = (
+                glob.glob(str(instance_data_root) + "/*.jpg")
+                + glob.glob(str(instance_data_root) + "/*.png")
+                + glob.glob(str(instance_data_root) + "/*.jpeg")
+            )
             possibily_src_images = (
                 set(possibily_src_images)
                 - set(glob.glob(str(instance_data_root) + "/*mask.png"))
@@ -203,6 +205,8 @@ def __init__(
         self._length = self.num_instance_images
 
         if class_data_root is not None:
+            assert NotImplementedError, "Prior preservation is not implemented yet."
+
             self.class_data_root = Path(class_data_root)
             self.class_data_root.mkdir(parents=True, exist_ok=True)
             self.class_images_path = list(self.class_data_root.iterdir())
diff --git a/lora_diffusion/preprocess_files.py b/lora_diffusion/preprocess_files.py
index bc54eea..bedb89f 100644
--- a/lora_diffusion/preprocess_files.py
+++ b/lora_diffusion/preprocess_files.py
@@ -121,6 +121,7 @@ def clipseg_mask_generator(
 @torch.no_grad()
 def blip_captioning_dataset(
     images: List[Image.Image],
+    text: Optional[str] = None,
     model_id: Literal[
         "Salesforce/blip-image-captioning-large",
         "Salesforce/blip-image-captioning-base",
@@ -139,7 +140,7 @@ def blip_captioning_dataset(
     captions = []
 
     for image in tqdm(images):
-        inputs = processor(image, return_tensors="pt").to("cuda")
+        inputs = processor(image, text=text, return_tensors="pt").to("cuda")
         out = model.generate(
             **inputs, max_length=150, do_sample=True, top_k=50, temperature=0.7
         )
@@ -243,6 +244,7 @@ def _center_of_mass(mask: Image.Image):
 def load_and_save_masks_and_captions(
     files: Union[str, List[str]],
     output_dir: str,
+    caption_text: Optional[str] = None,
     target_prompts: Optional[Union[List[str], str]] = None,
     target_size: int = 512,
     crop_based_on_salience: bool = True,
@@ -277,7 +279,7 @@ def load_and_save_masks_and_captions(
 
     # captions
     print(f"Generating {len(images)} captions...")
-    captions = blip_captioning_dataset(images)
+    captions = blip_captioning_dataset(images, text=caption_text)
 
     if target_prompts is None:
         target_prompts = captions
diff --git a/setup.py b/setup.py
index b27850c..d49c151 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 setup(
     name="lora_diffusion",
     py_modules=["lora_diffusion"],
-    version="0.1.4",
+    version="0.1.5",
     description="Low Rank Adaptation for Diffusion Models. Works with Stable Diffusion out-of-the-box.",
     author="Simo Ryu",
     packages=find_packages(),