diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index 974b25c..d7ba37f 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -29,5 +29,5 @@ jobs:
     - name: Run integration tests
       run: make test_e2e
       env:
-        KEY: ${{ secrets.anticaptcha_key }}
+        ANTICAPTCHA_API_KEY: ${{ secrets.anticaptcha_key }}
         PROXY_URL: "${{ secrets.proxy_url }}"
diff --git a/examples/async_balance.py b/examples/async_balance.py
index 49d1d85..ad072b1 100644
--- a/examples/async_balance.py
+++ b/examples/async_balance.py
@@ -4,7 +4,7 @@
 
 from python_anticaptcha import AsyncAnticaptchaClient
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 
 async def process():
diff --git a/examples/async_recaptcha_request.py b/examples/async_recaptcha_request.py
index b3dcaa1..af955ef 100644
--- a/examples/async_recaptcha_request.py
+++ b/examples/async_recaptcha_request.py
@@ -6,7 +6,7 @@
 
 from python_anticaptcha import AsyncAnticaptchaClient, NoCaptchaTaskProxylessTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'data-sitekey="(.+?)"'
 url = "https://www.google.com/recaptcha/api2/demo?invisible=false"
 EXPECTED_RESULT = "Verification Success... Hooray!"
diff --git a/examples/sync_antigate.py b/examples/sync_antigate.py
index 5c90b60..88d3714 100644
--- a/examples/sync_antigate.py
+++ b/examples/sync_antigate.py
@@ -4,7 +4,7 @@
 from python_anticaptcha import AnticaptchaClient
 from python_anticaptcha.tasks import AntiGateTaskProxyless
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 URL = "https://anti-captcha.com/tutorials/v2-textarea"
 
diff --git a/examples/sync_app_stat.py b/examples/sync_app_stat.py
index 8edc3d6..fb11ce2 100644
--- a/examples/sync_app_stat.py
+++ b/examples/sync_app_stat.py
@@ -4,7 +4,7 @@
 
 from python_anticaptcha import AnticaptchaClient
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 soft_id = argv[1]
 mode = argv[2]
diff --git a/examples/sync_balance.py b/examples/sync_balance.py
index 297e298..e097f59 100644
--- a/examples/sync_balance.py
+++ b/examples/sync_balance.py
@@ -3,7 +3,7 @@
 
 from python_anticaptcha import AnticaptchaClient
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 
 def process():
diff --git a/examples/sync_funcaptcha_request.py b/examples/sync_funcaptcha_request.py
index 4ebf2b9..fa554e1 100644
--- a/examples/sync_funcaptcha_request.py
+++ b/examples/sync_funcaptcha_request.py
@@ -6,7 +6,7 @@
 
 from python_anticaptcha import AnticaptchaClient, FunCaptchaTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'public_key: "(.+?)",'
 site_key_pattern = 'public_key: "(.+?)",'
 surl_pattern = 'surl: "(.+?)",'
diff --git a/examples/sync_funcaptcha_selenium.py b/examples/sync_funcaptcha_selenium.py
index 606e827..b1d4e26 100644
--- a/examples/sync_funcaptcha_selenium.py
+++ b/examples/sync_funcaptcha_selenium.py
@@ -8,7 +8,7 @@
 
 from python_anticaptcha import AnticaptchaClient, FunCaptchaTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'public_key: "(.+?)",'
 url = "https://client-demo.arkoselabs.com/solo-animals"
 client = AnticaptchaClient(api_key)
diff --git a/examples/sync_funcaptcha_selenium_callback.py b/examples/sync_funcaptcha_selenium_callback.py
index a347d18..e289d5a 100644
--- a/examples/sync_funcaptcha_selenium_callback.py
+++ b/examples/sync_funcaptcha_selenium_callback.py
@@ -9,7 +9,7 @@
 
 from python_anticaptcha import AnticaptchaClient, FunCaptchaProxylessTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'public_key: "(.+?)",'
 url = "https://client-demo.arkoselabs.com/solo-animals"
 EXPECTED_RESULT = "Solved!"
diff --git a/examples/sync_hcaptcha_request.py b/examples/sync_hcaptcha_request.py
index df94fdc..ef0c18d 100644
--- a/examples/sync_hcaptcha_request.py
+++ b/examples/sync_hcaptcha_request.py
@@ -5,7 +5,7 @@
 
 from python_anticaptcha import AnticaptchaClient, HCaptchaTaskProxyless
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'data-sitekey="(.+?)"'
 url = "http://hcaptcha.jawne.info.pl/"
 client = AnticaptchaClient(api_key)
diff --git a/examples/sync_hcaptcha_request_proxy.py b/examples/sync_hcaptcha_request_proxy.py
index 168146e..2e728cb 100644
--- a/examples/sync_hcaptcha_request_proxy.py
+++ b/examples/sync_hcaptcha_request_proxy.py
@@ -6,7 +6,7 @@
 
 from python_anticaptcha import AnticaptchaClient, HCaptchaTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 proxy_url = environ["PROXY_URL"]  # eg. socks5://user:password/123.123.123.123:8888/
 site_key_pattern = 'data-sitekey="(.+?)"'
 url = "http://hcaptcha.jawne.info.pl/"
diff --git a/examples/sync_recaptcha3_request.py b/examples/sync_recaptcha3_request.py
index a06cac4..a575f21 100644
--- a/examples/sync_recaptcha3_request.py
+++ b/examples/sync_recaptcha3_request.py
@@ -6,7 +6,7 @@
 
 from python_anticaptcha import AnticaptchaClient, RecaptchaV3TaskProxyless
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = r"grecaptcha.execute\('(.+?)'"
 action_name_pattern = r"\{action: '(.+?)'\}"
 url = "https://recaptcha-demo.appspot.com/recaptcha-v3-request-scores.php"
diff --git a/examples/sync_recaptcha_request.py b/examples/sync_recaptcha_request.py
index 9b917b1..1d7eb0c 100644
--- a/examples/sync_recaptcha_request.py
+++ b/examples/sync_recaptcha_request.py
@@ -5,7 +5,7 @@
 
 from python_anticaptcha import AnticaptchaClient, NoCaptchaTaskProxylessTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = 'data-sitekey="(.+?)"'
 url = "https://www.google.com/recaptcha/api2/demo?invisible=false"
 EXPECTED_RESULT = "Verification Success... Hooray!"
diff --git a/examples/sync_recaptcha_selenium.py b/examples/sync_recaptcha_selenium.py
index dc46a6d..5fa3be7 100644
--- a/examples/sync_recaptcha_selenium.py
+++ b/examples/sync_recaptcha_selenium.py
@@ -3,7 +3,7 @@
 
 from python_anticaptcha import AnticaptchaClient, NoCaptchaTaskProxylessTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 invisible_captcha = True
 url = f"https://www.google.com/recaptcha/api2/demo?invisible={str(invisible_captcha)}"
 EXPECTED_RESULT = "Verification Success... Hooray!"
diff --git a/examples/sync_recaptcha_selenium_callback.py b/examples/sync_recaptcha_selenium_callback.py
index 6004ca3..0cd0988 100644
--- a/examples/sync_recaptcha_selenium_callback.py
+++ b/examples/sync_recaptcha_selenium_callback.py
@@ -6,7 +6,7 @@
 
 from python_anticaptcha import AnticaptchaClient, NoCaptchaTaskProxylessTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 site_key_pattern = "'sitekey': '(.+?)'"
 url = "http://hcaptcha.jawne.info.pl/recaptcha.php"
 EXPECTED_RESULT = '"success": true,'
diff --git a/examples/sync_remote_image.py b/examples/sync_remote_image.py
index feb38d5..bcc77a2 100644
--- a/examples/sync_remote_image.py
+++ b/examples/sync_remote_image.py
@@ -4,7 +4,7 @@
 
 from python_anticaptcha import AnticaptchaClient, ImageToTextTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 URL = "https://raw.githubusercontent.com/ad-m/python-anticaptcha/master/examples/captcha_ms.jpeg"
 EXPECTED_RESULT = "56nn2"
diff --git a/examples/sync_text.py b/examples/sync_text.py
index 18c14e2..0d152bf 100644
--- a/examples/sync_text.py
+++ b/examples/sync_text.py
@@ -2,7 +2,7 @@
 
 from python_anticaptcha import AnticaptchaClient, ImageToTextTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 
 IMAGE = "examples/captcha_ms.jpeg"
 EXPECTED_RESULT = "56nn2"
diff --git a/examples/sync_text_stream.py b/examples/sync_text_stream.py
index a8c133f..4b4f5a7 100644
--- a/examples/sync_text_stream.py
+++ b/examples/sync_text_stream.py
@@ -3,7 +3,7 @@
 
 from python_anticaptcha import AnticaptchaClient, ImageToTextTask
 
-api_key = environ["KEY"]
+api_key = environ["ANTICAPTCHA_API_KEY"]
 DIR = os.path.dirname(os.path.abspath(__file__))
 IMAGE = f"{DIR}/captcha_ms.jpeg"
 EXPECTED_RESULT = "56nn2"
diff --git a/tests/test_examples.py b/tests/test_examples.py
index 5bd8054..ff382b6 100644
--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -8,8 +8,8 @@
 
 def missing_key(*args, **kwargs):
     return skipIf(
-        "KEY" not in os.environ,
-        "Missing KEY environment variable. Unable to connect Anti-captcha.com",
+        "ANTICAPTCHA_API_KEY" not in os.environ,
+        "Missing ANTICAPTCHA_API_KEY environment variable. Unable to connect Anti-captcha.com",
     )(*args, **kwargs)