diff --git a/Dockerfile b/Dockerfile
index e107202..fa7f829 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM tiangolo/uvicorn-gunicorn-fastapi:python3.8-slim
+FROM tiangolo/uvicorn-gunicorn-fastapi:python3.9-slim
 ENV DOCKER=1
 
 COPY requirements.txt /app/requirements.txt
diff --git a/Pipfile b/Pipfile
index f048fa8..8a22574 100644
--- a/Pipfile
+++ b/Pipfile
@@ -19,7 +19,7 @@ black = "*"
 mypy = "*"
 
 [requires]
-python_version = "3.8"
+python_version = "3.9"
 
 [scripts]
 test = "pytest app/test/test_main.py -s"