diff --git a/data/grid5000/sites/lyon/lyon.json b/data/grid5000/sites/lyon/lyon.json
index 6ab2db9f721ca8a3a64a1f7c4cc4e9650a7eddca..d6713e5564765b8ec085d52eff16a09e3f2db787 100644
--- a/data/grid5000/sites/lyon/lyon.json
+++ b/data/grid5000/sites/lyon/lyon.json
@@ -54,9 +54,9 @@
       "network": "172.16.48.0/20"
     }
   },
-  "latitude": 45.7667,
+  "latitude": 45.72971,
   "location": "Lyon, France",
-  "longitude": 4.8333,
+  "longitude": 4.82781,
   "name": "Lyon",
   "production": true,
   "renater_ip": "192.168.4.13",
diff --git a/input/grid5000/sites/lyon/lyon.yaml b/input/grid5000/sites/lyon/lyon.yaml
index dea9eb4db3c328f93a9ec2834e7a5e866cfcb7e9..88fc1f2d97134abecc25aa876e5bbc6a24a2b7fa 100644
--- a/input/grid5000/sites/lyon/lyon.yaml
+++ b/input/grid5000/sites/lyon/lyon.yaml
@@ -3,8 +3,8 @@ name: Lyon
 location: Lyon, France
 web: https://www.grid5000.fr/mediawiki/index.php/Lyon:Home
 description: Lyon Grid5000 Site
-latitude: 45.7667
-longitude: 4.8333
+latitude: 45.72971
+longitude: 4.82781
 email_contact: support-staff@lists.grid5000.fr
 sys_admin_contact: support-staff@lists.grid5000.fr
 security_contact: support-staff@lists.grid5000.fr