diff --git a/app/routes.py b/app/routes.py
index 280d69d..bf5a36e 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -1,6 +1,6 @@
 import json, datetime, fcntl, glob, os, re, socket, subprocess, time
 
-from flask import request, abort
+from flask import jsonify, request, abort
 from flask import Blueprint
 from app import email
 
@@ -25,7 +25,7 @@ DEBIAN_PACKAGES_EXP="/srv/packages/pool/main/s/scodoc9/scodoc9_*.deb"
 @bp.route("/scodoc-installmgr/last_stable_version")
 def last_stable_version():
     """version du dernier paquet ScoDoc 9 publié.
-    => chaine, "9.1.82"
+    => json
     """
     # LAST_RELEASE_TAG=$(curl "$GITEA_RELEASE_URL" | jq ".[].tag_name" | tr -d -c "0-9.\n" | sort --version-sort | tail -1)
     debs = glob.glob(DEBIAN_PACKAGES_EXP)
@@ -33,13 +33,21 @@ def last_stable_version():
     for filename in debs:
         m = re.match(r".*scodoc9_9\.([0-9]{1,2})\.([0-9]{1,3})-1_amd64.deb", filename)
         if m:
-            version_tuples.append( (9, int(m.group(1)), int(m.group(2))) )
+            version_tuples.append( (9, int(m.group(1)), int(m.group(2)), filename) )
 
     if len(version_tuples) == 0:
         return "?.?.?"
     version_tuples.sort()
-    last_package_version = version_tuples[-1]
-    return ".".join([str(x) for x in last_package_version])
+    last_package_version = version_tuples[-1][:-1]
+    last_package_filename = version_tuples[-1][-1]
+    package_mtime = os.path.getmtime(last_package_filename)
+    package_version_string = ".".join([str(x) for x in last_package_version])
+    return jsonify( {
+        "publication_time": package_mtime, # float, time
+        "version" : package_version_string,
+        }
+    )
+
 
 
 @bp.route("/scodoc-installmgr/upload-dump", methods=["POST"])