diff --git a/calendar-contact.org b/calendar-contact.org
index 63ba4b8..2db7ac3 100644
--- a/calendar-contact.org
+++ b/calendar-contact.org
@@ -28,6 +28,22 @@ type = "filesystem"
 path = "~/.calendars/radicale/"
 fileext = ".ics"
 
+[pair esrf_calendar]
+a = "esrf_calendar_remote"
+b = "esrf_calendar_local"
+collections = ["calendar"]
+conflict_resolution = "a wins"
+
+[storage esrf_calendar_remote]
+type = "caldav"
+url = "https://calendar.esrf.fr/egroupware/groupdav.php/calendar"
+username = "dehaeze"
+password = "<<get-password(passname="ce-esrf.fr/dehaeze")>>"
+
+[storage esrf_calendar_local]
+type = "filesystem"
+path = "~/.calendars/esrf/"
+fileext = ".ics"
 
 [pair radicale_contacts]
 a = "radicale_contacts_remote"
@@ -58,14 +74,18 @@ password = "<<get-password(passname="radicale.tdehaeze.xyz/tdehaeze")>>"
 
 [[Home]]
 path = ~/.calendars/radicale/76bfc802-3186-e3af-f688-7e165115b4f8/
-color = "#B8BB26"
+color = "#B8BB26" # Green
 
 [[Thesis]]
 path = ~/.calendars/radicale/f78f1649-b54e-7bfe-488d-6a7005a5aa2f/
-color = "#FB4934"
+color = "#FB4934" # Red
+
+[[ESRF]]
+path = ~/.calendars/esrf/calendar/
+color = "#83A598" # Blue
 
 [highlight_days]
-multiple = "#FABD2F"
+multiple = "#FABD2F" # Yellow
 
 [default]
 highlight_event_days = True