diff --git a/Dockerfile b/Dockerfile
index bee5f8c..53992bd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-buster as builder
+FROM python:3.9-bullseye as builder
 
 RUN pip install poetry
 
@@ -9,14 +9,14 @@ ENV POETRY_NO_INTERACTION=1 \
 
 WORKDIR /app
 
-COPY pyproject.toml poetry.lock ./
+COPY pyproject.toml /app/pyproject.toml
 RUN touch README.md
 
 RUN poetry install --without dev --no-root && rm -rf $POETRY_CACHE_DIR
 
 # The runtime image, used to just run the code provided its virtual environment
-FROM python:3.10-slim-buster as runtime
-LABEL maintainer="Nikolay Yurin <yurinnick@meta.com>"
+FROM python:3.9-bullseye as runtime
+LABEL maintainer="Ihor Solodrai <isolodrai@meta.com>"
 
 RUN apt update && \
     apt install -y git && \