diff --git a/airflow/dags/identify_changed_ocsge_data.py b/airflow/dags/identify_changed_ocsge_data.py
new file mode 100644
index 000000000..2dc067b2d
--- /dev/null
+++ b/airflow/dags/identify_changed_ocsge_data.py
@@ -0,0 +1,71 @@
+import json
+
+import requests
+from airflow.decorators import dag, task
+from bs4 import BeautifulSoup
+from include.container import Container
+from pendulum import datetime
+
+with open("include/ocsge/sources.json", "r") as f:
+    sources = json.load(f)
+
+
+@dag(
+    start_date=datetime(2024, 1, 1),
+    schedule="0 10 * * *",  # every day at 10:00
+    catchup=False,
+    doc_md=__doc__,
+    default_args={"owner": "Alexis Athlani", "retries": 3},
+    tags=["OCS GE"],
+)
+def identify_changed_ocsge_data():
+    @task.python
+    def check_for_missing_urls():
+        url = "https://geoservices.ign.fr/ocsge#telechargement"
+        selector = "a"  # noqa: E501
+
+        new_html = requests.get(url).text
+        new_soup = BeautifulSoup(new_html, features="html.parser")
+        links = new_soup.select(selector)
+        current_urls = [link.get("href") for link in links]
+
+        missing_urls = []
+
+        for departement in sources:
+            difference: dict[str, str] = sources[departement]["difference"]
+            occupation_du_sol_et_zone_construite: dict[str, str] = sources[departement][
+                "occupation_du_sol_et_zone_construite"
+            ]
+
+            for year_pair, url in difference.items():
+                if url not in current_urls:
+                    missing_urls.append(
+                        {"departement": departement, "years": year_pair, "type": "difference", "url": url}
+                    )
+
+            for year, url in occupation_du_sol_et_zone_construite.items():
+                if url not in current_urls:
+                    missing_urls.append(
+                        {
+                            "departement": departement,
+                            "years": year,
+                            "type": "occupation_du_sol_et_zone_construite",
+                            "url": url,
+                        }
+                    )
+
+        if missing_urls:
+            markdown_message = "⚠️ Changement d'url des données OCS GE détecté\n"
+            for url in missing_urls:
+                markdown_message += "```\n"
+                markdown_message += f"Departement : {url['departement']}\n"
+                markdown_message += f"Années : {url['years']}\n"
+                markdown_message += f"Type : {url['type']}\n"
+                markdown_message += f"Url manquant : {url['url']}\n"
+                markdown_message += "```\n"
+            Container().mattermost().send(markdown_message)
+
+    check_for_missing_urls()
+
+
+identify_changed_ocsge_data()