diff --git a/CHANGES.txt b/CHANGES.txt
index 58e2dae..80a7835 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,3 +1,7 @@
+## Version 2.25.0 du 24/12/2015-11:15
+
+6c73940 cgilsxml.py: désactiver le cache par défaut
+
 ## Version 2.24.1 du 24/12/2015-10:12
 
 3aba3e3 bug
diff --git a/VERSION.txt b/VERSION.txt
index 0f5dfbe..5c18f91 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-2.24.1
+2.25.0
diff --git a/lib/ulib/.ulibver b/lib/ulib/.ulibver
index 6d1795a..e24b6c4 100644
--- a/lib/ulib/.ulibver
+++ b/lib/ulib/.ulibver
@@ -1 +1 @@
-009010000
+009011000
diff --git a/lib/ulib/support/cgilsxml.py b/lib/ulib/support/cgilsxml.py
index 9362793..14ba866 100755
--- a/lib/ulib/support/cgilsxml.py
+++ b/lib/ulib/support/cgilsxml.py
@@ -173,6 +173,11 @@ def select_file(files, name):
     if matches: return matches[0]
     else: return None
 
+def cgi_nocache():
+    print "Cache-Control: private, no-cache, no-store, must-revalidate, max-age=0"
+    print "Pragma: no-cache"
+    print "Expires: Thu, 01 Jan 1970 00:00:00 GMT"
+
 def print_files(files, fgroups=None, select_group=None, script_name=None, query_string=None, xslt=None):
     xresult = ET.Element("result")
     xenv = ET.SubElement(xresult, "env")
@@ -228,6 +233,8 @@ def run_cgilsxml():
                   + u"\n  Il est possible de spécifier plusieurs champs pour le tri en les séparant par des virgules.")
     OP.add_option('--cgi', dest='cgi_mode', action='store_true',
                   help=u"Activer le mode CGI. Ce mode est automatiquement activé si la variable d'environnement REQUEST_METHOD existe.")
+    OP.add_option('--cgi-allow-cache', dest='cgi_allow_cache', action='store_true',
+                  help=u"En mode CGI, ne pas rajouter les en-tête désactivant la mise en cache du résultat.")
     OP.add_option('-P', '--cgi-path-info', dest='path_info',
                   help=u"Spécifier un chemin d'un fichier à télécharger. En mode CGI, cette valeur est prise dans la variable d'environnement PATH_INFO")
     OP.add_option('-Q', '--cgi-query-string', dest='query_string',
@@ -252,6 +259,7 @@ def run_cgilsxml():
     sortby = o.sortby
 
     environ = os.environ
+    cgi_cache = o.cgi_allow_cache and True or False
     cgi_mode = o.cgi_mode
     if cgi_mode is None:
         cgi_mode = 'REQUEST_METHOD' in environ
@@ -303,11 +311,13 @@ def run_cgilsxml():
         file = select_file(files, cgi_path_info)
         if file is None:
             if cgi_mode:
+                if not cgi_cache: cgi_nocache()
                 print "Content-Type: text/plain; charset=UTF-8"
                 print
             print "Impossible de trouver le fichier %s" % cgi_path_info
         else:
             if cgi_mode:
+                if not cgi_cache: cgi_nocache()
                 dlname = file.dlname or file.name
                 ctype = file.has_key('type') and file.type or None
                 if ctype is None: ctype, encoding = mimetypes.guess_type(dlname, False)
@@ -321,6 +331,7 @@ def run_cgilsxml():
         sys.exit()
 
     if cgi_mode:
+        if not cgi_cache: cgi_nocache()
         print "Content-Type: text/xml; charset=UTF-8"
         print
     print_files(files, fgroups, cgi_select_group, cgi_script_name, cgi_query_string, cgi_xslt)