diff --git a/selenium/README.md b/selenium/README.md
index ad00e0b..d67c9a8 100644
--- a/selenium/README.md
+++ b/selenium/README.md
@@ -8,73 +8,9 @@ Watch [this][2] video to get started.
 
 ## Server
 
-docker-compose.yml
-
-```yaml
-firefox:
-  image: selenium/standalone-firefox-debug
-  ports:
-    - "4444:4444"
-    - "5900:5900"
-  environment:
-    - JAVA_OPTS=-Xmx512m
-  restart: always
-```
-
-docker-compose-grid.yml
-
-```yaml
-hub:
-  image: selenium/hub
-  container_name: hub
-  ports:
-    - "4444:4444"
-  environment:
-    - GRID_TIMEOUT=60
-    - GRID_BROWSER_TIMEOUT=30
-  restart: always
-
-chrome:
-  image: selenium/node-chrome
-  container_name: chrome
-  ports:
-    - "5555"
-  links:
-    - hub
-  restart: always
-
-firefox:
-  image: selenium/node-firefox
-  container_name: firefox
-  ports:
-    - "5555"
-  links:
-    - hub
-  restart: always
-```
-
-> Access grid console at <http://127.0.0.1:4444/grid/console>
-
-docker-compose-node.yml
-
-```yaml
-firefox:
-  image: selenium/node-firefox
-  ports:
-    - "5555:5555"
-    - "5900:5900"
-  environment:
-    - JAVA_OPTS=-Xmx512m
-    - NODE_MAX_INSTANCES=2
-    - NODE_MAX_SESSION=2
-    - SE_OPTS=-host 5.6.7.8 -port 5555
-    - HUB_PORT_4444_TCP_ADDR=1.2.3.4
-    - HUB_PORT_4444_TCP_PORT=4444
-  restart: always
-```
-
 ```bash
 $ docker-compose up -d
+$ curl http://127.0.0.1:4444/
 ```
 
 > Another way to start selenium server:
@@ -154,7 +90,7 @@ driver.quit();
 
 ```bash
 # VNC
-$ open vnc://:secret@127.0.0.1:5900
+$ open vnc://127.0.0.1:5900
 $ open http://127.0.0.1:7900
 
 # PYTHON
diff --git a/selenium/docker-compose-grid.yml b/selenium/docker-compose-grid.yml
deleted file mode 100644
index 7bc3a22..0000000
--- a/selenium/docker-compose-grid.yml
+++ /dev/null
@@ -1,40 +0,0 @@
-hub:
-  image: selenium/hub
-  ports:
-    - "4444:4444"
-  environment:
-    - GRID_TIMEOUT=60
-    - GRID_BROWSER_TIMEOUT=30
-  restart: always
-
-firefox:
-  image: selenium/node-firefox-debug
-  ports:
-    - "5555"
-    - "5901:5900"
-  links:
-    - hub
-  environment:
-    - JAVA_OPTS=-Xmx768m
-    - SCREEN_WIDTH=1024
-    - SCREEN_HEIGHT=768
-    - SCREEN_DEPTH=16
-    - NODE_MAX_INSTANCES=5
-    - NODE_MAX_SESSION=5
-  restart: always
-
-chrome:
-  image: selenium/node-chrome-debug
-  ports:
-    - "5555"
-    - "5902:5900"
-  links:
-    - hub
-  environment:
-    - JAVA_OPTS=-Xmx768m
-    - SCREEN_WIDTH=1024
-    - SCREEN_HEIGHT=768
-    - SCREEN_DEPTH=16
-    - NODE_MAX_INSTANCES=5
-    - NODE_MAX_SESSION=5
-  restart: always
diff --git a/selenium/docker-compose-node.yml b/selenium/docker-compose-node.yml
deleted file mode 100644
index d857110..0000000
--- a/selenium/docker-compose-node.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-firefox:
-  image: selenium/node-firefox-debug
-  ports:
-    - "5555:5555"
-    - "5900:5900"
-  environment:
-    - JAVA_OPTS=-Xmx512m
-    - SCREEN_WIDTH=1024
-    - SCREEN_HEIGHT=768
-    - SCREEN_DEPTH=16
-    - NODE_MAX_INSTANCES=2
-    - NODE_MAX_SESSION=2
-    - SE_OPTS=-host 5.6.7.8 -port 5555
-    - HUB_PORT_4444_TCP_ADDR=1.2.3.4
-    - HUB_PORT_4444_TCP_PORT=4444
-  restart: always
diff --git a/selenium/docker-compose.yml b/selenium/docker-compose.yml
index 6104182..91b0aef 100644
--- a/selenium/docker-compose.yml
+++ b/selenium/docker-compose.yml
@@ -1,3 +1,7 @@
+#
+# https://github.com/SeleniumHQ/docker-selenium/blob/trunk/docker-compose-v3.yml
+#
+
 version: "3.8"
 
 services:
@@ -22,19 +26,10 @@ services:
       - SE_NODE_OVERRIDE_MAX_SESSIONS=true
       - SE_NODE_MAX_SESSIONS=4
       - SE_NODE_SESSION_TIMEOUT=180
+      - START_XVFB=true
+      - VNC_NO_PASSWORD=1
+      - VNC_VIEW_ONLY=1
     shm_size: 2gb
     depends_on:
       - hub
     restart: unless-stopped
-
-  video:
-    image: selenium/video
-    volumes:
-      - ./data:/videos
-    environment:
-      - DISPLAY_CONTAINER_NAME=chrome
-      - FILE_NAME=output.mp4
-    shm_size: 2gb
-    depends_on:
-      - chrome
-    restart: unless-stopped
diff --git a/selenium/docker-stack.yml b/selenium/docker-stack.yml
index 4d6b675..2291194 100644
--- a/selenium/docker-stack.yml
+++ b/selenium/docker-stack.yml
@@ -40,6 +40,8 @@ services:
       - SE_NODE_MAX_SESSIONS=8
       - SE_NODE_SESSION_TIMEOUT=180
       - START_XVFB=true
+      - VNC_NO_PASSWORD=1
+      - VNC_VIEW_ONLY=1
     depends_on:
       - hub
     deploy:
diff --git a/selenium/grid/docker-compose-hub.yml b/selenium/grid/docker-compose-hub.yml
index 3fcf4b7..16ffda7 100644
--- a/selenium/grid/docker-compose-hub.yml
+++ b/selenium/grid/docker-compose-hub.yml
@@ -3,17 +3,14 @@ version: '3.8'
 services:
 
   hub:
-    image: selenium/hub:3.141.59
+    image: selenium/hub:4
     ports:
+      - "4442:4442"
+      - "4443:4443"
       - "4444:4444"
-    environment:
-      - JAVA_OPTS=-Xmx512m
-      - GRID_TIMEOUT=60
-      - GRID_BROWSER_TIMEOUT=30
     healthcheck:
       test: ["CMD", "/opt/bin/check-grid.sh", "--host", "127.0.0.1", "--port", "4444"]
       interval: 15s
       timeout: 30s
       retries: 5
-    shm_size: 2gb
     restart: unless-stopped
diff --git a/selenium/grid/docker-compose-node.yml b/selenium/grid/docker-compose-node.yml
index 5528962..0f42244 100644
--- a/selenium/grid/docker-compose-node.yml
+++ b/selenium/grid/docker-compose-node.yml
@@ -3,14 +3,21 @@ version: '3.8'
 services:
 
   chrome:
-    image: selenium/node-chrome:3.141.59
+    image: selenium/node-chrome:4
     ports:
-      - "5555:5555"
+      - "5900:5900"
+      - "7900:7900"
     environment:
-      - HUB_HOST=10.0.0.21
-      - HUB_PORT=4444
-      - REMOTE_HOST=http://10.0.0.22:5555
-      - NODE_MAX_INSTANCES=2
-      - NODE_MAX_SESSION=2
+      - SE_EVENT_BUS_HOST=hub
+      - SE_EVENT_BUS_PUBLISH_PORT=4442
+      - SE_EVENT_BUS_SUBSCRIBE_PORT=4443
+      - SE_NODE_OVERRIDE_MAX_SESSIONS=true
+      - SE_NODE_MAX_SESSIONS=4
+      - SE_NODE_SESSION_TIMEOUT=180
+      - START_XVFB=true
+      - VNC_NO_PASSWORD=1
+      - VNC_VIEW_ONLY=1
+    extra_hosts:
+      - hub:x.x.x.x
     shm_size: 2gb
     restart: unless-stopped