diff --git a/README.md b/README.md
index d909430..d289994 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,7 @@ dokku git:from-image publitebackend publite/backend:latest
 ```
 
 # TODO
-* Separate epub and fb2 files to python modules
-* Rewrite own `.opf` file parsing to get rid of dependency on EbookLib
-* Add cli interfaces for epub and fb2 libs
+
+- Separate epub and fb2 files to python modules
+- Rewrite own `.opf` file parsing to get rid of dependency on EbookLib
+- Add cli interfaces for epub and fb2 libs
diff --git a/app/epub.py b/app/epub.py
index 0a3d1f7..106de36 100644
--- a/app/epub.py
+++ b/app/epub.py
@@ -8,7 +8,7 @@ from base64 import b64encode
 from functools import cache
 from tempfile import SpooledTemporaryFile
 
-import aiofiles as aiof
+import aiofiles
 import ebooklib
 from ebooklib import epub
 from fastapi import HTTPException
@@ -61,7 +61,7 @@ async def epub_to_tokens(
 
     tokens = {}
 
-    async with aiof.tempfile.NamedTemporaryFile() as tmp:
+    async with aiofiles.tempfile.NamedTemporaryFile() as tmp:
         await tmp.write(file.read())
 
         # Reading book file
diff --git a/app/main.py b/app/main.py
index c538693..e9d7e46 100644
--- a/app/main.py
+++ b/app/main.py
@@ -3,12 +3,17 @@
 from datetime import datetime
 
 from fastapi import FastAPI, File, HTTPException, UploadFile
+from fastapi.middleware.cors import CORSMiddleware
 from pydantic import BaseModel  # pylint: disable=no-name-in-module
 
 from .epub import epub2html
 from .fb2 import fb22html
 from .utils import HashedHTMLBook, add_hash
 
+origins = (
+    "*"
+)
+
 
 class DebugInfo(BaseModel):  # pylint: disable=too-few-public-methods
     """Main handler return types"""
@@ -18,6 +23,14 @@ class DebugInfo(BaseModel):  # pylint: disable=too-few-public-methods
 
 app = FastAPI()
 
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 start_time = datetime.now()
 
 
@@ -47,7 +60,8 @@ async def create_upload_file(file: UploadFile = File(...)):
     elif file.filename.endswith(".epub"):
         content = await epub2html(file.file)
     else:
-        raise HTTPException(status_code=415, detail="Error! Unsupported file type")
+        raise HTTPException(
+            status_code=415, detail="Error! Unsupported file type")
 
     h_content = add_hash(content)