diff --git a/fastapi/Dockerfile b/fastapi/Dockerfile
index 5bdc6e3..5b5bf8c 100644
--- a/fastapi/Dockerfile
+++ b/fastapi/Dockerfile
@@ -1,4 +1,4 @@
-FROM tiangolo/uvicorn-gunicorn-fastapi:python3.8
+FROM tiangolo/uvicorn-gunicorn-fastapi:python3.9-slim
 
 WORKDIR /app