diff --git a/docs/notif/telegram.md b/docs/notif/telegram.md
index 9fd8b7890..0b6be17e8 100644
--- a/docs/notif/telegram.md
+++ b/docs/notif/telegram.md
@@ -25,6 +25,7 @@ Multiple chat IDs can be provided in order to deliver notifications to multiple
 
 | Name                  | Default                            | Description                                                                                                                          |
 |-----------------------|------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------|
+| `apiURL`              | `https://api.telegram.org`         | Custom Telegram bot API base URL, for proxies or self-hosted bot API servers                                                         |
 | `token`               |                                    | Telegram bot token                                                                                                                   |
 | `tokenFile`           |                                    | Use content of [secret file](../faq.md#secrets-loaded-from-files-and-trailing-newlines) as Telegram bot token if `token` not defined |
 | `chatIDs`             |                                    | List of [chat IDs](#chatids-format) to send notifications to                                                                         |
@@ -33,6 +34,7 @@ Multiple chat IDs can be provided in order to deliver notifications to multiple
 | `disableNotification` | `false`                            | Send silent message with no sound                                                                                                    |
 
 !!! abstract "Environment variables"
+    * `DIUN_NOTIF_TELEGRAM_APIURL`
     * `DIUN_NOTIF_TELEGRAM_TOKEN`
     * `DIUN_NOTIF_TELEGRAM_TOKENFILE`
     * `DIUN_NOTIF_TELEGRAM_CHATIDS` (comma separated)
diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index 1c8b7780e..da610ae3f 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -5,6 +5,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/PaulSonOfLars/gotgbot/v2"
 	"github.com/crazy-max/diun/v4/internal/model"
 	"github.com/crazy-max/diun/v4/pkg/registry"
 	"github.com/crazy-max/diun/v4/pkg/utl"
@@ -193,7 +194,8 @@ for <code>{{ .Entry.Manifest.Platform }}</code> platform.
 						TemplateBody: model.NotifTeamsDefaultTemplateBody,
 					},
 					Telegram: &model.NotifTelegram{
-						Token: "abcdef123456",
+						APIURL: gotgbot.DefaultAPIURL,
+						Token:  "abcdef123456",
 						ChatIDs: []string{
 							"8547439",
 							"1234567",
@@ -347,6 +349,7 @@ func TestLoadEnv(t *testing.T) {
 			environ: []string{
 				"DIUN_NOTIF_TELEGRAM_TOKEN=abcdef123456",
 				"DIUN_NOTIF_TELEGRAM_CHATIDS=8547439,1234567",
+				"DIUN_NOTIF_TELEGRAM_APIURL=http://telegram-bot-api:8081",
 				"DIUN_PROVIDERS_SWARM=true",
 			},
 			expected: &Config{
@@ -362,6 +365,7 @@ func TestLoadEnv(t *testing.T) {
 						},
 						TemplateBody:        model.NotifTelegramDefaultTemplateBody,
 						DisableNotification: utl.NewFalse(),
+						APIURL:              "http://telegram-bot-api:8081",
 					},
 				},
 				Providers: &model.Providers{
diff --git a/internal/model/notif_telegram.go b/internal/model/notif_telegram.go
index d4d13e32e..1c5bda485 100644
--- a/internal/model/notif_telegram.go
+++ b/internal/model/notif_telegram.go
@@ -1,12 +1,16 @@
 package model
 
-import "github.com/crazy-max/diun/v4/pkg/utl"
+import (
+	"github.com/PaulSonOfLars/gotgbot/v2"
+	"github.com/crazy-max/diun/v4/pkg/utl"
+)
 
 // NotifTelegramDefaultTemplateBody ...
 const NotifTelegramDefaultTemplateBody = `Docker tag {{ if .Entry.Image.HubLink }}[{{ .Entry.Image }}]({{ .Entry.Image.HubLink }}){{ else }}{{ .Entry.Image }}{{ end }} which you subscribed to through {{ .Entry.Provider }} provider {{ if (eq .Entry.Status "new") }}is available{{ else }}has been updated{{ end }} on {{ .Entry.Image.Domain }} registry (triggered by {{ escapeMarkdown .Meta.Hostname }} host).`
 
 // NotifTelegram holds Telegram notification configuration details
 type NotifTelegram struct {
+	APIURL              string   `yaml:"apiURL,omitempty" json:"apiURL,omitempty" validate:"omitempty,url"`
 	Token               string   `yaml:"token,omitempty" json:"token,omitempty" validate:"omitempty"`
 	TokenFile           string   `yaml:"tokenFile,omitempty" json:"tokenFile,omitempty" validate:"omitempty,file"`
 	ChatIDs             []string `yaml:"chatIDs,omitempty" json:"chatIDs,omitempty" validate:"omitempty"`
@@ -24,6 +28,7 @@ func (s *NotifTelegram) GetDefaults() *NotifTelegram {
 
 // SetDefaults sets the default values
 func (s *NotifTelegram) SetDefaults() {
+	s.APIURL = gotgbot.DefaultAPIURL
 	s.TemplateBody = NotifTelegramDefaultTemplateBody
 	s.DisableNotification = utl.NewFalse()
 }
diff --git a/internal/notif/telegram/client.go b/internal/notif/telegram/client.go
index 6bbadec59..04186cb4b 100644
--- a/internal/notif/telegram/client.go
+++ b/internal/notif/telegram/client.go
@@ -73,7 +73,7 @@ func (c *Client) Send(entry model.NotifEntry) error {
 			Client: http.Client{},
 			DefaultRequestOpts: &gotgbot.RequestOpts{
 				Timeout: gotgbot.DefaultTimeout,
-				APIURL:  gotgbot.DefaultAPIURL,
+				APIURL:  c.cfg.APIURL,
 			},
 		},
 	})