diff --git a/.env.example b/.env.example
index 3cb95d9..ca8c477 100644
--- a/.env.example
+++ b/.env.example
@@ -14,4 +14,7 @@ DEFAULT_ADMIN_PASSWORD=admin123
 # Katalog wgrywanych plików
 UPLOAD_FOLDER=uploads
 
-AUTHORIZED_COOKIE_VALUE=twoj_wlasny_hash
\ No newline at end of file
+AUTHORIZED_COOKIE_VALUE=twoj_wlasny_hash
+
+# czas zycia cookie
+AUTH_COOKIE_MAX_AGE=86400
\ No newline at end of file
diff --git a/config.py b/config.py
index 7476d15..e846822 100644
--- a/config.py
+++ b/config.py
@@ -9,3 +9,4 @@ class Config:
     DEFAULT_ADMIN_PASSWORD = os.environ.get('DEFAULT_ADMIN_PASSWORD', 'admin123')
     UPLOAD_FOLDER = os.environ.get('UPLOAD_FOLDER', 'uploads')
     AUTHORIZED_COOKIE_VALUE = os.environ.get('AUTHORIZED_COOKIE_VALUE', 'cookievalue')
+    AUTH_COOKIE_MAX_AGE = int(os.environ.get('AUTH_COOKIE_MAX_AGE', 86400))
\ No newline at end of file