diff --git a/lab3-mutation/Dockerfile b/lab3-mutation/Dockerfile
index f8991c7..2b82bc7 100644
--- a/lab3-mutation/Dockerfile
+++ b/lab3-mutation/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.18.12
 MAINTAINER Davide Cioccia <d.cioccia@dcodx.com>
 RUN apk update --no-cache && apk add python3 \
 python3-dev \