diff --git a/.env_template b/.env_template
index 53a2a92..0b96b5f 100644
--- a/.env_template
+++ b/.env_template
@@ -1,9 +1,9 @@
-aws_access_key_id=
-aws_secret_access_key=
+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
 
-bucket_name=
-s3_endpoint_url=
-region_name=
+BUCKET_NAME=
+S3_ENDPOINT_URL=
+REGION_NAME=
 
 REDIS_HOST=
 REDIS_PORT=
\ No newline at end of file
diff --git a/app/config.py b/app/config.py
index 14ad9a0..c7fefcb 100644
--- a/app/config.py
+++ b/app/config.py
@@ -5,12 +5,12 @@ from pydantic_settings import BaseSettings
 class Settings(BaseSettings):
     model_config = ConfigDict(env_file=".env")
 
-    aws_access_key_id: str
-    aws_secret_access_key: str
+    AWS_ACCESS_KEY_ID: str
+    AWS_SECRET_ACCESS_KEY: str
 
-    bucket_name: str
-    s3_endpoint_url: str
-    region_name: str
+    BUCKET_NAME: str
+    S3_ENDPOINT_URL: str
+    REGION_NAME: str
 
     REDIS_HOST: str
     REDIS_PORT: int
diff --git a/app/main.py b/app/main.py
index 841af3a..7b1c98d 100644
--- a/app/main.py
+++ b/app/main.py
@@ -34,10 +34,10 @@ app.add_middleware(
 )
 
 s3 = boto3.client('s3',
-                  endpoint_url=settings.s3_endpoint_url,
-                  region_name=settings.region_name,
-                  aws_access_key_id=settings.aws_access_key_id,
-                  aws_secret_access_key=settings.aws_secret_access_key)
+                  endpoint_url=settings.S3_ENDPOINT_URL,
+                  region_name=settings.REGION_NAME,
+                  aws_access_key_id=settings.AWS_ACCESS_KEY_ID,
+                  aws_secret_access_key=settings.AWS_SECRET_ACCESS_KEY)
 
 
 @app.post("/upload_image", response_model=SImage)
@@ -66,14 +66,14 @@ async def upload_image(file: UploadFile, target_width: int = 250):
     object_key = str(uuid.uuid4()) + f".{image_type}"
 
     try:
-        post = s3.generate_presigned_post(settings.bucket_name, object_key,
+        post = s3.generate_presigned_post(settings.BUCKET_NAME, object_key,
                                           Fields={"Content-Type": "image/webp"},
                                           Conditions=[["eq", "$content-type", "image/webp"]])
         async with AsyncClient() as ac:
             await ac.post(post["url"], data=post["fields"], files=[("file", (object_key, new_image))])
 
         response = s3.generate_presigned_url('get_object',
-                                             Params={'Bucket': settings.bucket_name,
+                                             Params={'Bucket': settings.BUCKET_NAME,
                                                      'Key': object_key},
                                              ExpiresIn=36000)