diff --git a/CHANGES.md b/CHANGES.md
index 2ff14c07..5aaf3506 100755
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -3,6 +3,7 @@
 ## Version 10.3.13
 Modification :
     - Verouillage des fichiers de données ouverts en écriture.
+    - Google Analytics, option d'anonymisation.
 
 ## Version 10.3.12
 Correction :
diff --git a/core/core.php b/core/core.php
index bbb5aee1..40b50aca 100755
--- a/core/core.php
+++ b/core/core.php
@@ -2205,7 +2205,7 @@ class layout extends common {
 					window.dataLayer = window.dataLayer || [];
 					function gtag(){dataLayer.push(arguments);}
 					gtag("js", new Date());
-					gtag("config","'. $code .'");
+					gtag("config","'. $code .'",{ "anonymize_ip": true });
 				</script>';
 		}
 	}