diff --git a/Dockerfile b/Dockerfile
index 57f3273..3af95e5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 #######################################
 # image for dev build environment
 ######################################
-FROM alpine:3.17.2 as DEV
+FROM alpine:3.18.2 as DEV
 # install packages
 RUN apk add --update --no-cache bash make git zsh curl tmux