diff --git a/README.md b/README.md
index 67e372a0..0c4b4ca1 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ microservices, cloud native and container-based (Docker, Kubernetes, Mesos) arch
 
 ## Set up Python Agent
 
-SkyWalking Python SDK requires SkyWalking 8.0+.
+SkyWalking Python SDK requires SkyWalking 8.0+ and Python 3.5+.
 
 > If you want to try out the latest features that're not released yet, please refer to [the guide](docs/FAQ.md#q-how-to-build-from-sources) to build from sources.