diff --git a/salt/bro/files/local.bro b/salt/bro/files/local.bro
index dbad5cf61..fc5e18517 100644
--- a/salt/bro/files/local.bro
+++ b/salt/bro/files/local.bro
@@ -141,4 +141,5 @@
 #@load custom/somebropolicy.bro
 
 # Write logs in JSON
-#redef LogAscii::use_json = T;
+redef LogAscii::use_json = T;
+redef LogAscii::json_timestamps = JSON::TS_ISO8601;
diff --git a/salt/bro/files/local.bro.community b/salt/bro/files/local.bro.community
index 58d079552..2ae12d7f2 100644
--- a/salt/bro/files/local.bro.community
+++ b/salt/bro/files/local.bro.community
@@ -129,4 +129,5 @@
 #@load custom/somebropolicy.bro
 
 # Use JSON
-#redef LogAscii::use_json = T;
+redef LogAscii::use_json = T;
+redef LogAscii::json_timestamps = JSON::TS_ISO8601;