diff --git a/homeassistant/components/telegram_bot/__init__.py b/homeassistant/components/telegram_bot/__init__.py
index 554ddd8fc4e..5bdc670d69c 100644
--- a/homeassistant/components/telegram_bot/__init__.py
+++ b/homeassistant/components/telegram_bot/__init__.py
@@ -72,7 +72,6 @@ from .const import (
     CONF_ALLOWED_CHAT_IDS,
     CONF_BOT_COUNT,
     CONF_CONFIG_ENTRY_ID,
-    CONF_PROXY_PARAMS,
     CONF_PROXY_URL,
     CONF_TRUSTED_NETWORKS,
     DEFAULT_TRUSTED_NETWORKS,
@@ -117,7 +116,6 @@ CONFIG_SCHEMA = vol.Schema(
                         ),
                         vol.Optional(ATTR_PARSER, default=PARSER_MD): cv.string,
                         vol.Optional(CONF_PROXY_URL): cv.string,
-                        vol.Optional(CONF_PROXY_PARAMS): dict,
                         # webhooks
                         vol.Optional(CONF_URL): cv.url,
                         vol.Optional(
diff --git a/homeassistant/components/telegram_bot/bot.py b/homeassistant/components/telegram_bot/bot.py
index 9debc7bbbf1..4a00aff8d3f 100644
--- a/homeassistant/components/telegram_bot/bot.py
+++ b/homeassistant/components/telegram_bot/bot.py
@@ -37,7 +37,6 @@ from homeassistant.const import (
 )
 from homeassistant.core import Context, HomeAssistant
 from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
-from homeassistant.helpers import issue_registry as ir
 from homeassistant.util.ssl import get_default_context, get_default_no_verify_context
 
 from .const import (
@@ -77,7 +76,6 @@ from .const import (
     ATTR_USERNAME,
     ATTR_VERIFY_SSL,
     CONF_CHAT_ID,
-    CONF_PROXY_PARAMS,
     CONF_PROXY_URL,
     DOMAIN,
     EVENT_TELEGRAM_CALLBACK,
@@ -877,52 +875,9 @@ def initialize_bot(hass: HomeAssistant, p_config: MappingProxyType[str, Any]) ->
     """Initialize telegram bot with proxy support."""
     api_key: str = p_config[CONF_API_KEY]
     proxy_url: str | None = p_config.get(CONF_PROXY_URL)
-    proxy_params: dict | None = p_config.get(CONF_PROXY_PARAMS)
 
     if proxy_url is not None:
-        auth = None
-        if proxy_params is None:
-            # CONF_PROXY_PARAMS has been kept for backwards compatibility.
-            proxy_params = {}
-        elif "username" in proxy_params and "password" in proxy_params:
-            # Auth can actually be stuffed into the URL, but the docs have previously
-            # indicated to put them here.
-            auth = proxy_params.pop("username"), proxy_params.pop("password")
-            ir.create_issue(
-                hass,
-                DOMAIN,
-                "proxy_params_auth_deprecation",
-                breaks_in_ha_version="2024.10.0",
-                is_persistent=False,
-                is_fixable=False,
-                severity=ir.IssueSeverity.WARNING,
-                translation_placeholders={
-                    "proxy_params": CONF_PROXY_PARAMS,
-                    "proxy_url": CONF_PROXY_URL,
-                    "telegram_bot": "Telegram bot",
-                },
-                translation_key="proxy_params_auth_deprecation",
-                learn_more_url="https://github.com/home-assistant/core/pull/112778",
-            )
-        else:
-            ir.create_issue(
-                hass,
-                DOMAIN,
-                "proxy_params_deprecation",
-                breaks_in_ha_version="2024.10.0",
-                is_persistent=False,
-                is_fixable=False,
-                severity=ir.IssueSeverity.WARNING,
-                translation_placeholders={
-                    "proxy_params": CONF_PROXY_PARAMS,
-                    "proxy_url": CONF_PROXY_URL,
-                    "httpx": "httpx",
-                    "telegram_bot": "Telegram bot",
-                },
-                translation_key="proxy_params_deprecation",
-                learn_more_url="https://github.com/home-assistant/core/pull/112778",
-            )
-        proxy = httpx.Proxy(proxy_url, auth=auth, **proxy_params)
+        proxy = httpx.Proxy(proxy_url)
         request = HTTPXRequest(connection_pool_size=8, proxy=proxy)
     else:
         request = HTTPXRequest(connection_pool_size=8)
diff --git a/homeassistant/components/telegram_bot/const.py b/homeassistant/components/telegram_bot/const.py
index 4abdbaf9738..d6da96d9a28 100644
--- a/homeassistant/components/telegram_bot/const.py
+++ b/homeassistant/components/telegram_bot/const.py
@@ -13,8 +13,6 @@ SUBENTRY_TYPE_ALLOWED_CHAT_IDS = "allowed_chat_ids"
 CONF_BOT_COUNT = "bot_count"
 CONF_ALLOWED_CHAT_IDS = "allowed_chat_ids"
 CONF_CONFIG_ENTRY_ID = "config_entry_id"
-CONF_PROXY_PARAMS = "proxy_params"
-
 
 CONF_PROXY_URL = "proxy_url"
 CONF_TRUSTED_NETWORKS = "trusted_networks"
diff --git a/homeassistant/components/telegram_bot/strings.json b/homeassistant/components/telegram_bot/strings.json
index 9fcc0740970..e932d010894 100644
--- a/homeassistant/components/telegram_bot/strings.json
+++ b/homeassistant/components/telegram_bot/strings.json
@@ -924,10 +924,6 @@
     "proxy_params_auth_deprecation": {
       "title": "{telegram_bot}: Proxy authentication should be moved to the URL",
       "description": "Authentication details for the the proxy configured in the {telegram_bot} integration should be moved into the {proxy_url} instead. Please update your configuration and restart Home Assistant to fix this issue.\n\nThe {proxy_params} config key will be removed in a future release."
-    },
-    "proxy_params_deprecation": {
-      "title": "{telegram_bot}: Proxy params option will be removed",
-      "description": "The {proxy_params} config key for the {telegram_bot} integration will be removed in a future release.\n\nAuthentication can now be provided through the {proxy_url} key.\n\nThe underlying library has changed to {httpx} which is incompatible with previous parameters. If you still need this functionality for other options, please leave a comment on the learn more link.\n\nPlease update your configuration to remove the {proxy_params} key and restart Home Assistant to fix this issue."
     }
   }
 }