diff --git a/hydra/Dockerfile b/hydra/Dockerfile
index 74af44d..2e6fefd 100644
--- a/hydra/Dockerfile
+++ b/hydra/Dockerfile
@@ -2,11 +2,11 @@
 # Dockerfile for hydra
 #
 
-FROM alpine
+FROM alpine:3
 MAINTAINER EasyPi Software Foundation
 
-ENV HYDRA_VERSION=9.1
-ENV HYDRA_URL=https://github.com/vanhauser-thc/thc-hydra/archive/v$HYDRA_VERSION.tar.gz
+ARG HYDRA_VERSION=9.3
+ARG HYDRA_URL=https://github.com/vanhauser-thc/thc-hydra/archive/v${HYDRA_VERSION}.tar.gz
 
 RUN set -xe \
     && apk add --no-cache apr-dev \
diff --git a/hydra/README.md b/hydra/README.md
index 640268c..2734eb7 100644
--- a/hydra/README.md
+++ b/hydra/README.md
@@ -23,13 +23,16 @@ A very fast network logon cracker which support many different services.
 ## docker-compose.yml
 
 ```yaml
-hydra:
-  image: vimagick/hydra
-  command: sleep infinity
-  volumes:
-    - ./data:/data
-  working_dir: /data
-  restart: unless-stopped
+version: "3.8"
+services:
+  hydra:
+    image: vimagick/hydra
+    entrypoint: sleep
+    command: infinity
+    volumes:
+      - ./data:/data
+    working_dir: /data
+    restart: unless-stopped
 ```
 
 # up and running
@@ -47,9 +50,9 @@ $ docker-compose exec hydra bash
 >>> hydra -l admin -P passwd.txt -o hacked.txt http://www.target.com/login.php
     [DATA] max 1 task per 1 server, overall 64 tasks, 3 login try (l:1/p:1), ~0 tries per task
     [DATA] attacking service http-get on port 2812
-    [2812][http-get] host: ss.easypi.info   login: admin   password: admin
+    [2812][http-get] host: www.target.com   login: admin   password: admin
     1 of 1 target successfully completed, 1 valid password found
 
 >>> cat hacked.txt
-    [2812][http-get] host: ss.easypi.info   login: admin   password: admin
+    [2812][http-get] host: www.target.com   login: admin   password: admin
 ```
diff --git a/hydra/docker-compose.yml b/hydra/docker-compose.yml
index acecd75..58356de 100644
--- a/hydra/docker-compose.yml
+++ b/hydra/docker-compose.yml
@@ -1,8 +1,10 @@
-hydra:
-  image: vimagick/hydra
-  entrypoint: sleep
-  command: infinity
-  volumes:
-    - ./data:/data
-  working_dir: /data
-  restart: unless-stopped
+version: "3.8"
+services:
+  hydra:
+    image: vimagick/hydra
+    entrypoint: sleep
+    command: infinity
+    volumes:
+      - ./data:/data
+    working_dir: /data
+    restart: unless-stopped