diff --git a/docs/troubleshooting.rst b/docs/troubleshooting.rst
index 468e5b3..3e8ce14 100644
--- a/docs/troubleshooting.rst
+++ b/docs/troubleshooting.rst
@@ -9,8 +9,3 @@ Troubleshooting
   supply it as a parameter to ``verify`` in your config file, e.g.::
 
       verify = /usr/share/ca-certificates/cacert.org/cacert.org_root.crt
-
-- **During sync an error occurs: TypeError: request() got an unexpected keyword
-  argument 'verify'**
-
-  You need to update your version of requests.
diff --git a/setup.py b/setup.py
index 2751bc0..35ad5ae 100644
--- a/setup.py
+++ b/setup.py
@@ -39,8 +39,8 @@ setup(
     },
     install_requires=[
         'click>=3.1',
-        'requests',
-        'lxml',
+        'requests>=2.1',
+        'lxml>=3.0',
         'icalendar>=3.6',
         'requests_toolbelt>=0.3.0'
     ],