diff --git a/README.md b/README.md
index b639c7e..960d0b6 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@
 
 ## Requirements
 
+* Python>=3.6
 * PyQt5
 
 ## Installing
diff --git a/setup.py b/setup.py
index e1ee4fb..f6b6c38 100644
--- a/setup.py
+++ b/setup.py
@@ -4,6 +4,7 @@
       author='yakimka',
       version='0.4.0',
       packages=['CherryTomato'],
+      python_requires='>=3.6',
       install_requires=['PyQt5', 'qroundprogressbar'],
       url='https://github.com/yakimka/CherryTomato',
       license='GPL',