diff --git a/Dockerfile b/Dockerfile
index b5d4b60..06df1a5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,8 @@ WORKDIR /build
 
 COPY pyproject.toml .
 
-RUN pip install --no-cache-dir --prefix=/install .
+RUN apk update --no-cache && apk upgrade --no-cache && \
+    pip install --no-cache-dir --prefix=/install .
 
 COPY app.py .
 
@@ -18,6 +19,8 @@ COPY --from=builder /install /usr/local
 WORKDIR /app
 COPY app.py .
 
+RUN apk update --no-cache && apk upgrade --no-cache
+
 USER appuser
 
 ENTRYPOINT ["python", "app.py"]