diff --git a/docs/docker-compose-traefik-v1.yml b/docs/docker-compose-traefik-v1.yml
index a5ea12d..e8ee2e5 100644
--- a/docs/docker-compose-traefik-v1.yml
+++ b/docs/docker-compose-traefik-v1.yml
@@ -25,7 +25,7 @@ services:
       - ./letsencrypt:/letsencrypt
 
   traefik-certs-dumper:
-    image: ldez/traefik-certs-dumper:v2.7.4
+    image: ldez/traefik-certs-dumper:v2.8.1
     entrypoint: sh -c '
       apk add jq
       ; while ! [ -e /data/acme.json ]
diff --git a/docs/docker-compose-traefik-v2.yml b/docs/docker-compose-traefik-v2.yml
index 969f8dd..7a8f89e 100644
--- a/docs/docker-compose-traefik-v2.yml
+++ b/docs/docker-compose-traefik-v2.yml
@@ -1,9 +1,9 @@
-version: '3.7'
+version: '3.9'
 
 services:
 
   traefik:
-    image: traefik:v2.3
+    image: traefik:v2.8.1
     command:
       - --log.level=INFO
       - --entrypoints.web.address=:80
@@ -25,7 +25,7 @@ services:
       - ./letsencrypt/:/letsencrypt
 
   traefik-certs-dumper:
-    image: ldez/traefik-certs-dumper:v2.7.4
+    image: ldez/traefik-certs-dumper:v2.8.1
     entrypoint: sh -c '
       apk add jq
       ; while ! [ -e /data/acme.json ]
diff --git a/readme.md b/readme.md
index 3f78b98..59975e2 100644
--- a/readme.md
+++ b/readme.md
@@ -139,13 +139,13 @@ For the former, create a file (ex: `hook.sh`) and mount it, then pass `sh hooksh
 Here is a docker-compose example:
 
 ```yml
-version: '3.7'
+version: '3.9'
 
 services:
 # ...
 
   traefik-certs-dumper:
-    image: ldez/traefik-certs-dumper:v2.7.4
+    image: ldez/traefik-certs-dumper:v2.8.1
     container_name: traefik-certs-dumper
     entrypoint: sh -c '
       apk add jq