diff --git a/Dockerfile b/Dockerfile
index 533e27e..7b7b710 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 ## Build venv
-FROM python:3.10.2-bullseye AS venv
+FROM python:3.10.4-bullseye AS venv
 
 # https://python-poetry.org/docs/#installation
 ENV POETRY_VERSION=1.1.13
@@ -28,10 +28,9 @@ RUN git rev-parse HEAD | tee /version
 
 
 ## Beginning of runtime image
-FROM python:3.10.2-slim-bullseye as prod
-
-RUN echo "Europe/Paris" > /etc/timezone \
-    && mkdir /db
+FROM python:3.10.4-slim-bullseye as prod
+ENV TZ "Europe/Paris"
+RUN mkdir /db
 
 COPY --from=venv /app/venv /app/venv/
 ENV PATH /app/venv/bin:$PATH