diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 020b8cd..c63d267 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -44,4 +44,4 @@ repos:
           - types-aiofiles
           - typing-extensions<5; python_version < "3.11"
           - tomli<3; python_version < "3.11"
-          - uvloop<0.20; platform_python_implementation == "CPython" and (sys_platform == "darwin" or sys_platform == "linux")
+          - uvloop<0.20; implementation_name == "cpython" and (sys_platform == "darwin" or sys_platform == "linux")
diff --git a/poetry.lock b/poetry.lock
index 49c075d..f4912b0 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1282,4 +1282,4 @@ termux = []
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "4e9ed735edd49c4e3fd13e3b61aab06e290edbf29069994f399277e675a0ca07"
+content-hash = "f15afce60a11a55270abf068ea841832d01bdeb6b64ed0b480d6cbe95e2f7c06"
diff --git a/proxy_scraper_checker/__main__.py b/proxy_scraper_checker/__main__.py
index 85c3fac..9eb7355 100644
--- a/proxy_scraper_checker/__main__.py
+++ b/proxy_scraper_checker/__main__.py
@@ -2,7 +2,6 @@ from __future__ import annotations
 
 import asyncio
 import logging
-import platform
 import sys
 from typing import TYPE_CHECKING, Dict, Mapping
 
@@ -37,7 +36,7 @@ logger = logging.getLogger(__name__)
 def set_event_loop_policy() -> None:
     if sys.platform == "win32":
         asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
-    elif platform.python_implementation() == "CPython" and sys.platform in {
+    elif sys.implementation.name == "cpython" and sys.platform in {
         "darwin",
         "linux",
     }:
diff --git a/pyproject.toml b/pyproject.toml
index c282b4f..4c791c7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,8 +14,8 @@ aiofiles = ">=0.8"
 aiohttp = "^3.8.6"
 aiohttp-socks = ">=0.7,<0.9"
 attrs = ">=22.2"
-brotli = { version = "^1", markers = "platform_python_implementation == 'CPython'" }
-brotlicffi = { version = "<2", markers = "platform_python_implementation != 'CPython'" }
+brotli = { version = "^1", markers = "implementation_name == 'cpython'" }
+brotlicffi = { version = "<2", markers = "implementation_name != 'cpython'" }
 certifi = "*"
 charset-normalizer = ">=2,<4"
 maxminddb = ">=1.3,<3"
@@ -23,7 +23,7 @@ platformdirs = "<5"
 rich = ">=12.3,<14"
 tomli = { version = "<3", python = "<3.11" }
 typing-extensions = { version = "^4.4", python = "<3.11" }
-uvloop = { version = ">=0.14,<0.20", optional = true, markers = "platform_python_implementation == 'CPython' and (sys_platform == 'darwin' or sys_platform == 'linux')" }
+uvloop = { version = ">=0.14,<0.20", optional = true, markers = "implementation_name == 'cpython' and (sys_platform == 'darwin' or sys_platform == 'linux')" }
 
 [tool.poetry.extras]
 non-termux = ["aiodns", "uvloop"]