diff --git a/README.md b/README.md
index 6a3d123..8636fb3 100644
--- a/README.md
+++ b/README.md
@@ -7,14 +7,18 @@
 ## [ES] Cliente Python (NO OFICIAL) para i-DE (Iberdrola distribución).
 ### Instalación:
 
+#### Requests support:
+
 ```
-pip install oligo
+pip install oligo[requests]
 ```
+
 #### Async support:
 
 ```
 pip install oligo[asyncio]
 ```
+
 ### Ejemplos:
 
 #### Consultar consumo actual (Sync):
diff --git a/demo/arduino_watthourmeter.py b/demo/arduino_watthourmeter.py
index b0a0e63..c87e0b9 100644
--- a/demo/arduino_watthourmeter.py
+++ b/demo/arduino_watthourmeter.py
@@ -1,12 +1,12 @@
 import PyCmdMessenger
 import time
-from oligo import iber
+from oligo import Iber
 
 arduino = PyCmdMessenger.ArduinoBoard("/dev/ttyACM0", baud_rate=9600)
 commands = [["watt", "d"]]
 c = PyCmdMessenger.CmdMessenger(arduino, commands)
 
-connection = iber.Iber()
+connection = Iber()
 connection.login("user", "password")
 
 while True:
diff --git a/oligo/__init__.py b/oligo/__init__.py
index 9c04639..afd128c 100644
--- a/oligo/__init__.py
+++ b/oligo/__init__.py
@@ -1 +1,6 @@
-from .iber import Iber
+from sys import stderr
+
+try:
+    from .requests.iber import Iber
+except ImportError as error:
+    print(error.message, file=stderr)
diff --git a/oligo/asyncio/asynciber.py b/oligo/asyncio/asynciber.py
index ecd2d7c..db14a78 100644
--- a/oligo/asyncio/asynciber.py
+++ b/oligo/asyncio/asynciber.py
@@ -1,10 +1,10 @@
-from oligo.exception import SessionException, ResponseException, NoResponseException, LoginException, \
+from ..exception import SessionException, ResponseException, NoResponseException, LoginException, \
     SelectContractException
 
 try:
     import aiohttp
 except ImportError:
-    raise RuntimeError("AsyncIber requires aiohttp")
+    raise RuntimeError("AsyncIber requires aiohttp module")
 
 from datetime import datetime
 from typing import Union, Optional
diff --git a/oligo/requests/__init__.py b/oligo/requests/__init__.py
new file mode 100644
index 0000000..9c04639
--- /dev/null
+++ b/oligo/requests/__init__.py
@@ -0,0 +1 @@
+from .iber import Iber
diff --git a/oligo/iber.py b/oligo/requests/iber.py
similarity index 97%
rename from oligo/iber.py
rename to oligo/requests/iber.py
index ba6e9c0..46234ba 100644
--- a/oligo/iber.py
+++ b/oligo/requests/iber.py
@@ -1,8 +1,12 @@
 from datetime import datetime
 
-from requests import Session
+try:
+    from requests import Session
+except ImportError:
+    raise RuntimeError("Iber requires requests module")
 
-from .exception import LoginException, ResponseException, NoResponseException, SelectContractException, SessionException
+from ..exception import LoginException, ResponseException, NoResponseException, SelectContractException, \
+    SessionException
 
 
 class Iber:
diff --git a/setup.py b/setup.py
index 131df5d..96d90e6 100644
--- a/setup.py
+++ b/setup.py
@@ -14,10 +14,9 @@
     long_description_content_type="text/markdown",
     url="https://github.com/hectorespert/python-oligo",
     packages=find_packages(),
-    install_requires=[
-        'requests'
-    ],
+    install_requires=[],
     extras_require={
+        'requests': ['requests'],
         'asyncio':  ['aiohttp']
     },
     classifiers=[