diff --git a/Dockerfile b/Dockerfile
index 5e4c759..f2de6cd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # Install the base requirements for the app.
 # This stage is to support development.
-FROM --platform=$BUILDPLATFORM python:alpine AS base
+FROM --platform=$BUILDPLATFORM python:3.9-slim AS base
 WORKDIR /app
 COPY requirements.txt .
 RUN pip install -r requirements.txt