diff --git a/Dockerfile b/Dockerfile
index e2869ce..d20a9a1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM elixir:1.9.4
+FROM elixir:1.10.4
 
 ENV APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn
 ENV DEBIAN_FRONTEND noninteractive
@@ -8,7 +8,7 @@ RUN apt-get update
 RUN apt-get -y upgrade
 RUN apt-get -y install git vim sudo inotify-tools
 
-RUN curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
+RUN curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
 
 RUN apt-get -y install nodejs
 
@@ -27,4 +27,4 @@ WORKDIR /apps
 
 RUN mix local.hex --force
 RUN mix local.rebar --force
-RUN mix archive.install --force hex phx_new 1.4.11
+RUN mix archive.install --force hex phx_new 1.5.4
diff --git a/README.md b/README.md
index 6cf8de0..93905c4 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,8 @@ Docker を用いて Elixir/Phoenix アプリケーションの開発・学習を
 
 * Debian 10 (Buster)
 * Erlang/OTP 22.1.8
-* Elixir 1.9.4
-* Phoenix 1.4.11
+* Elixir 1.10.4
+* Phoenix 1.5.4
 * Node.js 10.18
 * npm 6.13
 
diff --git a/docker-compose.yml b/docker-compose.yml
index b5715e1..cecb85f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,23 @@
-version: "3"
+version: "3.1"
 services:
+  postgres:
+    image: postgres:12.4-alpine
+    environment:
+      POSTGRES_USER: phoenix
+      POSTGRES_PASSWORD: phoenix
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+
+  mysql:
+    image: mysql:8.0.21
+    command: --default-authentication-plugin=mysql_native_password
+    environment:
+      MYSQL_ROOT_PASSWORD: example
+      MYSQL_USER: phoenix
+      MYSQL_PASSWORD: phoenix
+    volumes:
+      - mysql_data:/var/lib/mysql
+
   web:
     build: .
     command: bash
@@ -11,4 +29,11 @@ services:
     working_dir: /apps
     ports:
       - "4000:4000"
+    depends_on:
+      - postgres
+      - mysql
     tty: true
+
+volumes:
+  postgres_data:
+  mysql_data: