diff --git a/README.rst b/README.rst
index a610c7c6..22f6bfab 100644
--- a/README.rst
+++ b/README.rst
@@ -18,7 +18,7 @@ workloads, instruments or output processing.
 Requirements
 ============
 
-- Python 3
+- Python 3.5+
 - Linux (should work on other Unixes, but untested)
 - Latest Android SDK (ANDROID_HOME must be set) for Android devices, or
 - SSH for Linux devices