diff --git a/app/init_wizard.py b/app/init_wizard.py
index 4724d78..1d094b1 100644
--- a/app/init_wizard.py
+++ b/app/init_wizard.py
@@ -132,6 +132,10 @@ DEFAULT_PERMISSIONS = [
     # Monitor
     ("monitor.read", "View monitor", "monitor"),
     ("monitor.manage", "Manage monitor", "monitor"),
+    # Calendar
+    ("calendar.read", "View calendar slots and plans", "calendar"),
+    ("calendar.write", "Create and edit calendar slots and plans", "calendar"),
+    ("calendar.manage", "Manage calendar settings and workload policies", "calendar"),
     # Webhook
     ("webhook.manage", "Manage webhooks", "admin"),
 ]
@@ -168,6 +172,7 @@ _MGR_PERMISSIONS = {
     "task.close", "task.reopen_closed", "task.reopen_completed",
     "propose.accept", "propose.reject", "propose.reopen",
     "monitor.read",
+    "calendar.read", "calendar.write", "calendar.manage",
     "user.reset-self-apikey",
 }
 
@@ -178,6 +183,7 @@ _DEV_PERMISSIONS = {
     "milestone.read",
     "task.close", "task.reopen_closed", "task.reopen_completed",
     "monitor.read",
+    "calendar.read", "calendar.write",
     "user.reset-self-apikey",
 }