diff --git a/angular/Dockerfile b/angular/Dockerfile
index 144209b..f243a27 100644
--- a/angular/Dockerfile
+++ b/angular/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:lts as development
+FROM node:lts AS development
 
 WORKDIR /app
 
@@ -12,7 +12,7 @@ ENV PORT=3000
 
 CMD [ "npm", "start" ]
 
-FROM development as builder
+FROM development AS builder
 
 RUN npm run build
 
diff --git a/nestjs/Dockerfile b/nestjs/Dockerfile
index ae65e31..3e5f326 100644
--- a/nestjs/Dockerfile
+++ b/nestjs/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:lts as builder
+FROM node:lts AS builder
 
 # Create app directory
 WORKDIR /usr/src/app
diff --git a/next/Dockerfile b/next/Dockerfile
index 69ecf44..a52c473 100644
--- a/next/Dockerfile
+++ b/next/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:lts as builder
+FROM node:lts AS builder
 
 WORKDIR /app
 
diff --git a/python/fastapi/fastapi-poetry/Dockerfile b/python/fastapi/fastapi-poetry/Dockerfile
index 0ea3da4..c3d8bc3 100644
--- a/python/fastapi/fastapi-poetry/Dockerfile
+++ b/python/fastapi/fastapi-poetry/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10 as requirements-builder
+FROM python:3.10 AS requirements-builder
 
 ENV POETRY_HOME="/opt/poetry"
 ENV POETRY_VERSION=1.6.1
diff --git a/react/Dockerfile b/react/Dockerfile
index 7333d48..23d3669 100644
--- a/react/Dockerfile
+++ b/react/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:lts as development
+FROM node:lts AS development
 
 WORKDIR /app
 
@@ -12,7 +12,7 @@ ENV PORT=3000
 
 CMD [ "npm", "start" ]
 
-FROM development as builder
+FROM development AS builder
 
 RUN npm run build
 
diff --git a/vue/Dockerfile b/vue/Dockerfile
index 7333d48..23d3669 100644
--- a/vue/Dockerfile
+++ b/vue/Dockerfile
@@ -1,4 +1,4 @@
-FROM node:lts as development
+FROM node:lts AS development
 
 WORKDIR /app
 
@@ -12,7 +12,7 @@ ENV PORT=3000
 
 CMD [ "npm", "start" ]
 
-FROM development as builder
+FROM development AS builder
 
 RUN npm run build