diff --git a/README.md b/README.md
index 85bef9e..93a6fc2 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ Features:
 ## Installation
 
 ```shell
+# python3 based pip is required (check with pip --version)
 $ pip install git+https://git.someserver.de/seba/fynncom/
 ```
 
diff --git a/setup.py b/setup.py
index 6146b89..ed744fa 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@ setup(name='fynncom',
       author='Sebastian Lohff',
       author_email='seba@someserver.de',
       url='https://git.someserver.de/seba/fynncom/',
-
+      python_requires='>=3.5',
       packages=['fynncom'],
       install_requires=['click', 'pyyaml'],
       entry_points={