diff --git a/.gitignore b/.gitignore
index 62c1e73..9d7d1dd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -92,3 +92,6 @@ ENV/
 
 # Rope project settings
 .ropeproject
+
+# Pycharm IDE
+.idea/
\ No newline at end of file
diff --git a/README.rst b/README.rst
index b7fbcf5..b3a385c 100644
--- a/README.rst
+++ b/README.rst
@@ -219,7 +219,7 @@ Error Codes
 
 -  **401 "Unauthorized"**: Your ``access_token`` is invalid. Either 
    you messed up, or it is outdated. You need to call 
-   ``refresh_access_token()`` or ``refresh_all_token()`` (check the 
+   ``refresh_access_token()`` or ``refresh_all_tokens()`` (check the 
    above section on account creation).
 -  **401 "Action not allowed"**: You are using a ``4.48`` account 
    with ``is_legacy=True``, but ``4.48`` accounts are not allowed
@@ -230,7 +230,9 @@ Error Codes
    to one specific endpoint.
 -  **477 "Signed Request Expected"**: This library should handle request
    signing. Make sure to upgrade to the latest version of ``jodel_api``,
-   as the signing key changes every few weeks.
+   as the signing key changes every few weeks. You can set the signing key
+   and version manually through these environment variables:
+   JODEL_API_JODELKEY and JODEL_API_JODELVERSION (jodel_api will prefer newer versions)
 -  **478 "Account not verified"**: Verify the account through GCM.
 -  **502 "Bad Gateway"**: Something went wrong server-side. This happens
    pretty randomly. ``jodel_api`` automatically retries two times when
diff --git a/setup.py b/setup.py
index 861e7c2..bbff821 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
     long_description = f.read()
 
 setup(name='jodel_api',
-      version='1.2.11',
+      version='1.2.12',
       description='Unoffical Python Interface to the Jodel API',
       long_description=long_description,
       url='https://github.com/nborrmann/jodel_api',
diff --git a/src/jodel_api/jodel_api.py b/src/jodel_api/jodel_api.py
index f982b31..dd8f96b 100644
--- a/src/jodel_api/jodel_api.py
+++ b/src/jodel_api/jodel_api.py
@@ -15,6 +15,8 @@
 from urllib.parse import urlparse
 from jodel_api import gcmhack
 import time
+from os import environ
+from re import findall
 
 s = requests.Session()
 
@@ -24,10 +26,23 @@ class JodelAccount:
 
     api_url = "https://api.go-tellm.com/api{}"
     client_id = '81e8a76e-1e02-4d17-9ba0-8a7020261b26'
-    secret = 'HtJoqSysGFQXgFqYZRgwbpcFVAzLFSioVKTCwMcL'.encode('ascii')
-    version = '4.79.1'
     secret_legacy = 'hyTBJcvtpDLSgGUWjybbYUNKSSoVvMcfdjtjiQvf'.encode('ascii')
     version_legacy = '4.47.0'
+    secret = 'DKUdMXSujwAPihgJiMzHIDcXaxUNJwhBagBgBYlg'.encode('ascii')
+    version = '4.84.1'
+
+
+    if not (environ.get('JODEL_API_JODELKEY') == None or environ.get('JODEL_API_JODELVERSION') == None):
+        ver_environ = [int(s) for s in findall(r'\b\d+\b', environ.get('JODEL_API_JODELVERSION'))]
+        ver_builtin = [int(s) for s in findall(r'\b\d+\b', version)]
+
+        for i in range(len(ver_environ)):
+            if ver_builtin[i] < ver_environ[i]:
+                secret = environ.get('JODEL_API_JODELKEY').encode('ascii')
+                version = environ.get('JODEL_API_JODELVERSION')
+                break
+            elif ver_builtin[i] > ver_environ[i]:
+                break
 
 
     access_token = None