diff --git a/dockerfile b/dockerfile
index 21ac735..d00b7af 100644
--- a/dockerfile
+++ b/dockerfile
@@ -1,5 +1,5 @@
 # set base image (host OS)
-FROM python:3.8
+FROM python:3.9.10-slim-buster
 # copy the dependencies file to the working directory
 COPY requirements.txt .
 # install dependencies