diff --git a/homeassistant/components/local_calendar/calendar.py b/homeassistant/components/local_calendar/calendar.py
index 2905e98caab..718c65ffce2 100644
--- a/homeassistant/components/local_calendar/calendar.py
+++ b/homeassistant/components/local_calendar/calendar.py
@@ -33,6 +33,8 @@ from .store import LocalCalendarStore
 
 _LOGGER = logging.getLogger(__name__)
 
+PRODID = "-//homeassistant.io//local_calendar 1.0//EN"
+
 
 async def async_setup_entry(
     hass: HomeAssistant,
@@ -43,6 +45,7 @@ async def async_setup_entry(
     store = hass.data[DOMAIN][config_entry.entry_id]
     ics = await store.async_load()
     calendar = IcsCalendarStream.calendar_from_ics(ics)
+    calendar.prodid = PRODID
 
     name = config_entry.data[CONF_CALENDAR_NAME]
     entity = LocalCalendarEntity(store, calendar, name, unique_id=config_entry.entry_id)
diff --git a/homeassistant/components/local_calendar/manifest.json b/homeassistant/components/local_calendar/manifest.json
index 42cd7fcf5a9..049f9de03ea 100644
--- a/homeassistant/components/local_calendar/manifest.json
+++ b/homeassistant/components/local_calendar/manifest.json
@@ -6,5 +6,5 @@
   "documentation": "https://www.home-assistant.io/integrations/local_calendar",
   "iot_class": "local_polling",
   "loggers": ["ical"],
-  "requirements": ["ical==4.5.0"]
+  "requirements": ["ical==4.5.1"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 343660ab3de..b7f2f6a181f 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -952,7 +952,7 @@ ibm-watson==5.2.2
 ibmiotf==0.3.4
 
 # homeassistant.components.local_calendar
-ical==4.5.0
+ical==4.5.1
 
 # homeassistant.components.ping
 icmplib==3.0
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 6573d81e550..0c4581d87ec 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -723,7 +723,7 @@ iaqualink==0.5.0
 ibeacon_ble==1.0.1
 
 # homeassistant.components.local_calendar
-ical==4.5.0
+ical==4.5.1
 
 # homeassistant.components.ping
 icmplib==3.0
diff --git a/tests/components/local_calendar/snapshots/test_diagnostics.ambr b/tests/components/local_calendar/snapshots/test_diagnostics.ambr
index e61b9da7a90..a70b9d7438b 100644
--- a/tests/components/local_calendar/snapshots/test_diagnostics.ambr
+++ b/tests/components/local_calendar/snapshots/test_diagnostics.ambr
@@ -3,7 +3,7 @@
   dict({
     'ics': '''
       BEGIN:VCALENDAR
-      PRODID:-//github.com/allenporter/ical//4.5.0//EN
+      PRODID:-//homeassistant.io//local_calendar 1.0//EN
       VERSION:***
       BEGIN:VEVENT
       DTSTAMP:20230313T190500