diff --git a/mokuro/manga_page_ocr.py b/mokuro/manga_page_ocr.py
index 2157bb4..b5ccacd 100644
--- a/mokuro/manga_page_ocr.py
+++ b/mokuro/manga_page_ocr.py
@@ -1,5 +1,7 @@
+import os
 import cv2
 import numpy as np
+import pillow_avif # noqa: F401
 from PIL import Image
 from loguru import logger
 from scipy.signal.windows import gaussian
@@ -45,7 +47,17 @@ def __init__(
             self.mocr = MangaOcr(pretrained_model_name_or_path, force_cpu)
 
     def __call__(self, img_path):
-        img = imread(img_path)
+        # Check if the file is in AVIF format
+        # Create a temporary png path
+        img_path = str(img_path)
+        if img_path.lower().endswith('.avif'):
+            temp_path = img_path.replace('.avif', '_temp.png')
+            avif_img = Image.open(img_path)
+            avif_img.save(temp_path, 'PNG')
+            img = imread(temp_path)
+            os.remove(temp_path)
+        else:
+            img = imread(img_path)
         if img is None:
             raise InvalidImage()
         H, W, *_ = img.shape
diff --git a/mokuro/volume.py b/mokuro/volume.py
index 489752b..2dbaad3 100644
--- a/mokuro/volume.py
+++ b/mokuro/volume.py
@@ -106,7 +106,7 @@ def get_img_paths(self):
         img_paths = natsorted(
             p.relative_to(self.path_in)
             for p in self.path_in.glob("**/*")
-            if p.is_file() and p.suffix.lower() in (".jpg", ".jpeg", ".png", ".webp")
+            if p.is_file() and p.suffix.lower() in (".jpg", ".jpeg", ".png", ".webp", ".avif")
         )
         img_paths = {p.with_suffix(""): p for p in img_paths}
         return img_paths
diff --git a/pyproject.toml b/pyproject.toml
index 7583161..4be27f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
     "numpy",
     "opencv-python>=4.1.2",
     "Pillow>=7.1.2",
+    "pillow-avif-plugin >= 1.4.6",
     "pyclipper",
     "requests",
     "scipy",