diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index 1b59e90e4e..8c6643b9bc 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -2018,6 +2018,19 @@ PATH =
 ;SCHEDULE = @every 168h
 ;HTTP_ENDPOINT = https://dl.gitea.io/gitea/version.json
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Delete all old system notices from database
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;[cron.delete_old_system_notices]
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;ENABLED = false
+;RUN_AT_START = false
+;NO_SUCCESS_NOTICE = false
+;SCHEDULE = @every 168h
+;OLDER_THAN = 8760h
+
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Git Operation timeout in seconds
diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index d1d69a2310..d9018f982a 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -921,6 +921,13 @@ Default templates for project boards:
 - `SCHEDULE`: **@every 168h**: Cron syntax for scheduling a work, e.g. `@every 168h`.
 - `HTTP_ENDPOINT`: **https://dl.gitea.io/gitea/version.json**: the endpoint that Gitea will check for newer versions
 
+#### Cron -  Delete all old system notices from database ('cron.delete_old_system_notices')
+- `ENABLED`: **false**: Enable service.
+- `RUN_AT_START`: **false**: Run tasks at start up time (if ENABLED).
+- `NO_SUCCESS_NOTICE`: **false**: Set to true to switch off success notices.
+- `SCHEDULE`: **@every 168h**: Cron syntax to set how often to check.
+- `OLDER_THAN`: **@every 8760h**: any system notice older than this expression will be deleted from database.
+
 ## Git (`git`)
 
 - `PATH`: **""**: The path of Git executable. If empty, Gitea searches through the PATH environment.
diff --git a/models/admin/notice.go b/models/admin/notice.go
index daf095f680..77277e4b2d 100644
--- a/models/admin/notice.go
+++ b/models/admin/notice.go
@@ -7,6 +7,7 @@ package admin
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/modules/log"
@@ -133,3 +134,13 @@ func DeleteNoticesByIDs(ids []int64) error {
 		Delete(new(Notice))
 	return err
 }
+
+// DeleteOldSystemNotices deletes all old system notices from database.
+func DeleteOldSystemNotices(olderThan time.Duration) (err error) {
+	if olderThan <= 0 {
+		return nil
+	}
+
+	_, err = db.GetEngine(db.DefaultContext).Where("created_unix < ?", time.Now().Add(-olderThan).Unix()).Delete(&Notice{})
+	return
+}
diff --git a/options/locale/locale_en-US.ini b/options/locale/locale_en-US.ini
index b371c047e3..5008cd2bab 100644
--- a/options/locale/locale_en-US.ini
+++ b/options/locale/locale_en-US.ini
@@ -2463,6 +2463,7 @@ dashboard.gc_times = GC Times
 dashboard.delete_old_actions = Delete all old actions from database
 dashboard.delete_old_actions.started = Delete all old actions from database started.
 dashboard.update_checker = Update checker
+dashboard.delete_old_system_notices = Delete all old system notices from database
 
 users.user_manage_panel = User Account Management
 users.new_account = Create User Account
diff --git a/services/cron/tasks_extended.go b/services/cron/tasks_extended.go
index ded819a71e..2d1bf53234 100644
--- a/services/cron/tasks_extended.go
+++ b/services/cron/tasks_extended.go
@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/models/admin"
 	asymkey_model "code.gitea.io/gitea/models/asymkey"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/setting"
@@ -154,6 +155,20 @@ func registerUpdateGiteaChecker() {
 	})
 }
 
+func registerDeleteOldSystemNotices() {
+	RegisterTaskFatal("delete_old_system_notices", &OlderThanConfig{
+		BaseConfig: BaseConfig{
+			Enabled:    false,
+			RunAtStart: false,
+			Schedule:   "@every 168h",
+		},
+		OlderThan: 365 * 24 * time.Hour,
+	}, func(ctx context.Context, _ *user_model.User, config Config) error {
+		olderThanConfig := config.(*OlderThanConfig)
+		return admin.DeleteOldSystemNotices(olderThanConfig.OlderThan)
+	})
+}
+
 func initExtendedTasks() {
 	registerDeleteInactiveUsers()
 	registerDeleteRepositoryArchives()
@@ -166,4 +181,5 @@ func initExtendedTasks() {
 	registerRemoveRandomAvatars()
 	registerDeleteOldActions()
 	registerUpdateGiteaChecker()
+	registerDeleteOldSystemNotices()
 }