diff --git a/foobot_async/__init__.py b/foobot_async/__init__.py
index ca439ab..5457ce8 100644
--- a/foobot_async/__init__.py
+++ b/foobot_async/__init__.py
@@ -154,24 +154,21 @@ def _get(self, path, **kwargs):
         with async_timeout.timeout(self._timeout):
             resp = yield from self._session.get(
                     path, headers=dict(self._headers, **kwargs))
+            resp_text = yield from resp.text()
             if resp.status == 400:
-                raise FoobotClient.BadFormat(resp.text())
+                raise FoobotClient.BadFormat(resp_text)
             elif resp.status == 401:
-                raise FoobotClient.AuthFailure(resp.text())
+                raise FoobotClient.AuthFailure(resp_text)
             elif resp.status == 403:
-                raise FoobotClient.ForbiddenAccess(resp.text())
+                raise FoobotClient.ForbiddenAccess(resp_text)
             elif resp.status == 429:
-                raise FoobotClient.TooManyRequests(resp.text())
+                raise FoobotClient.TooManyRequests(resp_text)
             elif resp.status == 500:
-                raise FoobotClient.InternalError(resp.text())
+                raise FoobotClient.InternalError(resp_text)
             elif resp.status != 200:
-                raise FoobotClient.ClientError(resp.text())
+                raise FoobotClient.ClientError(resp_text)
             return (yield from resp.json())
 
-    @property
-    def last_data_request(self):
-        return self._last_data_request
-
     class ClientError(Exception):
         """Generic Error."""
         pass
diff --git a/setup.py b/setup.py
index e83de7a..cb1b46d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setuptools.setup(
     name="foobot_async",
-    version="0.3.0",
+    version="0.3.1",
     url="https://github.com/reefab/foobot_async",
 
     author="Fabien Piuzzi",
@@ -13,14 +13,13 @@
 
     packages=setuptools.find_packages(),
 
-    install_requires=['aiohttp==2.3.10', 'async_timeout', 'typing>=3,<4'],
+    install_requires=['aiohttp>=2.3.10', 'async_timeout', 'typing>=3,<4'],
     zip_safe=True,
 
     classifiers=[
         'Development Status :: 4 - Beta',
         'License :: OSI Approved :: MIT License',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
     ],
diff --git a/tox.ini b/tox.ini
index f54cdcf..8e471ba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist=py34,py35,py36
+envlist=py35,py36
 
 [testenv]
 commands=py.test --cov=foobot_async