diff --git a/Dockerfile b/Dockerfile
index 7cc0bf8..41640b1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,7 @@
 FROM alpine:3.20.0
 
 ENV TZ=Europe/Paris
+ENV DDNS_MYADDR_IP_VERSION="ipv4"
 ENV DDNS_MYADDR_KEY=xxxxx
 
 RUN apk update && apk add --no-cache tzdata curl wget python3 py3-pip
diff --git a/root/app/ddns-myaddr.py b/root/app/ddns-myaddr.py
index 64be006..f27ed34 100644
--- a/root/app/ddns-myaddr.py
+++ b/root/app/ddns-myaddr.py
@@ -7,12 +7,16 @@ from datetime import datetime, timedelta
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(message)s')
 
 # Variables
+ip_version      = os.getenv('DDNS_MYADDR_IP_VERSION')  # 'ipv4' ou 'ipv6'
 key             = os.getenv('DDNS_MYADDR_KEY')  # Récupère clé
 check_interval  = 15 * 60  # Intervalle de vérification de 15 minutes
 no_update_limit = timedelta(days=30)  # Limite de 30 jours
 
 def get_public_ip():
-    response = requests.get('https://api.ipify.org')
+    if ip_version == 'ipv6':
+        response = requests.get('https://api64.ipify.org')  # Appel pour IPv6
+    else:
+        response = requests.get('https://api.ipify.org')  # Appel pour IPv4
     return response.text.strip()
 
 def update_ip(ip):